Home / 15,549.28-21,471.42-13,333.12

Finding the Fourth Proportional to 15,549.28, 21,471.42 and 13,333.12

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Solution

The fourth proportional to 15,549.28, 21,471.42 and 13,333.12 is: 18,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.28 : 21,471.42 = 13,333.12 : x
  2. Step 2: Convert to fraction form
    15,549.28/21,471.42 = 13,333.12/x
  3. Step 3: Cross multiply
    15,549.28x = 21,471.42 × 13,333.12
  4. Step 4: Simplify right side
    15,549.28x = 286,281,019.43
  5. Step 5: Solve for x
    x = 286,281,019.43/15,549.28
  6. Step 6: Final answer
    x = 18,411.21

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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.