Home / 39,406.68-54,381.04-21,501.63

Finding the Fourth Proportional to 39,406.68, 54,381.04 and 21,501.63

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Solution

The fourth proportional to 39,406.68, 54,381.04 and 21,501.63 is: 29,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.68 : 54,381.04 = 21,501.63 : x
  2. Step 2: Convert to fraction form
    39,406.68/54,381.04 = 21,501.63/x
  3. Step 3: Cross multiply
    39,406.68x = 54,381.04 × 21,501.63
  4. Step 4: Simplify right side
    39,406.68x = 1,169,280,947.34
  5. Step 5: Solve for x
    x = 1,169,280,947.34/39,406.68
  6. Step 6: Final answer
    x = 29,672.15

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Double scale
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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.