Home / 39,442.05-54,431.16-21,538.20

Finding the Fourth Proportional to 39,442.05, 54,431.16 and 21,538.20

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Solution

The fourth proportional to 39,442.05, 54,431.16 and 21,538.20 is: 29,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.05 : 54,431.16 = 21,538.20 : x
  2. Step 2: Convert to fraction form
    39,442.05/54,431.16 = 21,538.20/x
  3. Step 3: Cross multiply
    39,442.05x = 54,431.16 × 21,538.20
  4. Step 4: Simplify right side
    39,442.05x = 1,172,349,210.31
  5. Step 5: Solve for x
    x = 1,172,349,210.31/39,442.05
  6. Step 6: Final answer
    x = 29,723.33

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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.