Home / 15,641.28-21,566.13-12,444.81

Finding the Fourth Proportional to 15,641.28, 21,566.13 and 12,444.81

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Solution

The fourth proportional to 15,641.28, 21,566.13 and 12,444.81 is: 17,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,641.28 : 21,566.13 = 12,444.81 : x
  2. Step 2: Convert to fraction form
    15,641.28/21,566.13 = 12,444.81/x
  3. Step 3: Cross multiply
    15,641.28x = 21,566.13 × 12,444.81
  4. Step 4: Simplify right side
    15,641.28x = 268,386,390.29
  5. Step 5: Solve for x
    x = 268,386,390.29/15,641.28
  6. Step 6: Final answer
    x = 17,158.85

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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.