Home / 11,340.36-15,611.40-9,347.76

Finding the Fourth Proportional to 11,340.36, 15,611.40 and 9,347.76

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Solution

The fourth proportional to 11,340.36, 15,611.40 and 9,347.76 is: 12,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,340.36 : 15,611.40 = 9,347.76 : x
  2. Step 2: Convert to fraction form
    11,340.36/15,611.40 = 9,347.76/x
  3. Step 3: Cross multiply
    11,340.36x = 15,611.40 × 9,347.76
  4. Step 4: Simplify right side
    11,340.36x = 145,931,620.46
  5. Step 5: Solve for x
    x = 145,931,620.46/11,340.36
  6. Step 6: Final answer
    x = 12,868.34

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Double scale
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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.