Home / 13,223.13-18,246.75-7,556.76

Finding the Fourth Proportional to 13,223.13, 18,246.75 and 7,556.76

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Solution

The fourth proportional to 13,223.13, 18,246.75 and 7,556.76 is: 10,427.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.13 : 18,246.75 = 7,556.76 : x
  2. Step 2: Convert to fraction form
    13,223.13/18,246.75 = 7,556.76/x
  3. Step 3: Cross multiply
    13,223.13x = 18,246.75 × 7,556.76
  4. Step 4: Simplify right side
    13,223.13x = 137,886,310.53
  5. Step 5: Solve for x
    x = 137,886,310.53/13,223.13
  6. Step 6: Final answer
    x = 10,427.66

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Half scale
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Double scale
Find fourth proportional to 13,224.13, 18,248.13 and 7,557.76
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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.