Home / 39,425.20-54,406.34-21,520.06

Finding the Fourth Proportional to 39,425.20, 54,406.34 and 21,520.06

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Solution

The fourth proportional to 39,425.20, 54,406.34 and 21,520.06 is: 29,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.20 : 54,406.34 = 21,520.06 : x
  2. Step 2: Convert to fraction form
    39,425.20/54,406.34 = 21,520.06/x
  3. Step 3: Cross multiply
    39,425.20x = 54,406.34 × 21,520.06
  4. Step 4: Simplify right side
    39,425.20x = 1,170,827,701.18
  5. Step 5: Solve for x
    x = 1,170,827,701.18/39,425.20
  6. Step 6: Final answer
    x = 29,697.44

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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.