Home / 15,329.28-21,156.29-8,615.19

Finding the Fourth Proportional to 15,329.28, 21,156.29 and 8,615.19

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Solution

The fourth proportional to 15,329.28, 21,156.29 and 8,615.19 is: 11,890.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.28 : 21,156.29 = 8,615.19 : x
  2. Step 2: Convert to fraction form
    15,329.28/21,156.29 = 8,615.19/x
  3. Step 3: Cross multiply
    15,329.28x = 21,156.29 × 8,615.19
  4. Step 4: Simplify right side
    15,329.28x = 182,265,414.97
  5. Step 5: Solve for x
    x = 182,265,414.97/15,329.28
  6. Step 6: Final answer
    x = 11,890.02

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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.