Home / 39,381.86-54,347.42-21,476.70

Finding the Fourth Proportional to 39,381.86, 54,347.42 and 21,476.70

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Solution

The fourth proportional to 39,381.86, 54,347.42 and 21,476.70 is: 29,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.86 : 54,347.42 = 21,476.70 : x
  2. Step 2: Convert to fraction form
    39,381.86/54,347.42 = 21,476.70/x
  3. Step 3: Cross multiply
    39,381.86x = 54,347.42 × 21,476.70
  4. Step 4: Simplify right side
    39,381.86x = 1,167,203,288.81
  5. Step 5: Solve for x
    x = 1,167,203,288.81/39,381.86
  6. Step 6: Final answer
    x = 29,638.09

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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.