Home / 39,412.24-54,389.68-21,508.00

Finding the Fourth Proportional to 39,412.24, 54,389.68 and 21,508.00

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Solution

The fourth proportional to 39,412.24, 54,389.68 and 21,508.00 is: 29,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.24 : 54,389.68 = 21,508.00 : x
  2. Step 2: Convert to fraction form
    39,412.24/54,389.68 = 21,508.00/x
  3. Step 3: Cross multiply
    39,412.24x = 54,389.68 × 21,508.00
  4. Step 4: Simplify right side
    39,412.24x = 1,169,813,047.70
  5. Step 5: Solve for x
    x = 1,169,813,047.70/39,412.24
  6. Step 6: Final answer
    x = 29,681.47

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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.