Home / 39,387.34-54,353.24-21,482.69

Finding the Fourth Proportional to 39,387.34, 54,353.24 and 21,482.69

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Solution

The fourth proportional to 39,387.34, 54,353.24 and 21,482.69 is: 29,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.34 : 54,353.24 = 21,482.69 : x
  2. Step 2: Convert to fraction form
    39,387.34/54,353.24 = 21,482.69/x
  3. Step 3: Cross multiply
    39,387.34x = 54,353.24 × 21,482.69
  4. Step 4: Simplify right side
    39,387.34x = 1,167,653,805.42
  5. Step 5: Solve for x
    x = 1,167,653,805.42/39,387.34
  6. Step 6: Final answer
    x = 29,645.41

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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.