Home / 39,233.09-54,142-21,328.11

Finding the Fourth Proportional to 39,233.09, 54,142 and 21,328.11

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Solution

The fourth proportional to 39,233.09, 54,142 and 21,328.11 is: 29,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,233.09 : 54,142 = 21,328.11 : x
  2. Step 2: Convert to fraction form
    39,233.09/54,142 = 21,328.11/x
  3. Step 3: Cross multiply
    39,233.09x = 54,142 × 21,328.11
  4. Step 4: Simplify right side
    39,233.09x = 1,154,746,260.91
  5. Step 5: Solve for x
    x = 1,154,746,260.91/39,233.09
  6. Step 6: Final answer
    x = 29,432.97

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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.