Home / 39,425.67-54,405.88-21,520.65

Finding the Fourth Proportional to 39,425.67, 54,405.88 and 21,520.65

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Solution

The fourth proportional to 39,425.67, 54,405.88 and 21,520.65 is: 29,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.67 : 54,405.88 = 21,520.65 : x
  2. Step 2: Convert to fraction form
    39,425.67/54,405.88 = 21,520.65/x
  3. Step 3: Cross multiply
    39,425.67x = 54,405.88 × 21,520.65
  4. Step 4: Simplify right side
    39,425.67x = 1,170,850,051.64
  5. Step 5: Solve for x
    x = 1,170,850,051.64/39,425.67
  6. Step 6: Final answer
    x = 29,697.66

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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.