Home / 39,387.26-54,354.18-21,482.18

Finding the Fourth Proportional to 39,387.26, 54,354.18 and 21,482.18

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Solution

The fourth proportional to 39,387.26, 54,354.18 and 21,482.18 is: 29,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.26 : 54,354.18 = 21,482.18 : x
  2. Step 2: Convert to fraction form
    39,387.26/54,354.18 = 21,482.18/x
  3. Step 3: Cross multiply
    39,387.26x = 54,354.18 × 21,482.18
  4. Step 4: Simplify right side
    39,387.26x = 1,167,646,278.51
  5. Step 5: Solve for x
    x = 1,167,646,278.51/39,387.26
  6. Step 6: Final answer
    x = 29,645.28

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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.