Home / 39,406.72-54,381.41-21,502.11

Finding the Fourth Proportional to 39,406.72, 54,381.41 and 21,502.11

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Solution

The fourth proportional to 39,406.72, 54,381.41 and 21,502.11 is: 29,672.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.72 : 54,381.41 = 21,502.11 : x
  2. Step 2: Convert to fraction form
    39,406.72/54,381.41 = 21,502.11/x
  3. Step 3: Cross multiply
    39,406.72x = 54,381.41 × 21,502.11
  4. Step 4: Simplify right side
    39,406.72x = 1,169,314,930.93
  5. Step 5: Solve for x
    x = 1,169,314,930.93/39,406.72
  6. Step 6: Final answer
    x = 29,672.98

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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.