Home / 39,381.32-54,346.41-21,476.61

Finding the Fourth Proportional to 39,381.32, 54,346.41 and 21,476.61

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Solution

The fourth proportional to 39,381.32, 54,346.41 and 21,476.61 is: 29,637.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.32 : 54,346.41 = 21,476.61 : x
  2. Step 2: Convert to fraction form
    39,381.32/54,346.41 = 21,476.61/x
  3. Step 3: Cross multiply
    39,381.32x = 54,346.41 × 21,476.61
  4. Step 4: Simplify right side
    39,381.32x = 1,167,176,652.47
  5. Step 5: Solve for x
    x = 1,167,176,652.47/39,381.32
  6. Step 6: Final answer
    x = 29,637.82

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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.