Home / 39,157.12-54,036.88-21,252.12

Finding the Fourth Proportional to 39,157.12, 54,036.88 and 21,252.12

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Solution

The fourth proportional to 39,157.12, 54,036.88 and 21,252.12 is: 29,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.12 : 54,036.88 = 21,252.12 : x
  2. Step 2: Convert to fraction form
    39,157.12/54,036.88 = 21,252.12/x
  3. Step 3: Cross multiply
    39,157.12x = 54,036.88 × 21,252.12
  4. Step 4: Simplify right side
    39,157.12x = 1,148,398,287.02
  5. Step 5: Solve for x
    x = 1,148,398,287.02/39,157.12
  6. Step 6: Final answer
    x = 29,327.96

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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.