Home / 21,382.04-29,502.50-12,424.36

Finding the Fourth Proportional to 21,382.04, 29,502.50 and 12,424.36

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Solution

The fourth proportional to 21,382.04, 29,502.50 and 12,424.36 is: 17,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.04 : 29,502.50 = 12,424.36 : x
  2. Step 2: Convert to fraction form
    21,382.04/29,502.50 = 12,424.36/x
  3. Step 3: Cross multiply
    21,382.04x = 29,502.50 × 12,424.36
  4. Step 4: Simplify right side
    21,382.04x = 366,549,680.90
  5. Step 5: Solve for x
    x = 366,549,680.90/21,382.04
  6. Step 6: Final answer
    x = 17,142.88

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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.