Home / 15,505.30-21,397.76-9,540.46

Finding the Fourth Proportional to 15,505.30, 21,397.76 and 9,540.46

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Solution

The fourth proportional to 15,505.30, 21,397.76 and 9,540.46 is: 13,166.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.30 : 21,397.76 = 9,540.46 : x
  2. Step 2: Convert to fraction form
    15,505.30/21,397.76 = 9,540.46/x
  3. Step 3: Cross multiply
    15,505.30x = 21,397.76 × 9,540.46
  4. Step 4: Simplify right side
    15,505.30x = 204,144,407.95
  5. Step 5: Solve for x
    x = 204,144,407.95/15,505.30
  6. Step 6: Final answer
    x = 13,166.11

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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.