Home / 13,903.32-19,185.84-7,934.76

Finding the Fourth Proportional to 13,903.32, 19,185.84 and 7,934.76

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Solution

The fourth proportional to 13,903.32, 19,185.84 and 7,934.76 is: 10,949.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.32 : 19,185.84 = 7,934.76 : x
  2. Step 2: Convert to fraction form
    13,903.32/19,185.84 = 7,934.76/x
  3. Step 3: Cross multiply
    13,903.32x = 19,185.84 × 7,934.76
  4. Step 4: Simplify right side
    13,903.32x = 152,235,035.80
  5. Step 5: Solve for x
    x = 152,235,035.80/13,903.32
  6. Step 6: Final answer
    x = 10,949.55

Related Problems

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Half scale
Find fourth proportional to 27,806.64, 38,371.68 and 15,869.52
Double scale
Find fourth proportional to 13,904.32, 19,187.22 and 7,935.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.