Home / 39,165.12-54,046.38-21,259.74

Finding the Fourth Proportional to 39,165.12, 54,046.38 and 21,259.74

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Solution

The fourth proportional to 39,165.12, 54,046.38 and 21,259.74 is: 29,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,165.12 : 54,046.38 = 21,259.74 : x
  2. Step 2: Convert to fraction form
    39,165.12/54,046.38 = 21,259.74/x
  3. Step 3: Cross multiply
    39,165.12x = 54,046.38 × 21,259.74
  4. Step 4: Simplify right side
    39,165.12x = 1,149,011,986.74
  5. Step 5: Solve for x
    x = 1,149,011,986.74/39,165.12
  6. Step 6: Final answer
    x = 29,337.63

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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.