Home / 39,605.85-54,657.45-21,702.42

Finding the Fourth Proportional to 39,605.85, 54,657.45 and 21,702.42

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Solution

The fourth proportional to 39,605.85, 54,657.45 and 21,702.42 is: 29,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,605.85 : 54,657.45 = 21,702.42 : x
  2. Step 2: Convert to fraction form
    39,605.85/54,657.45 = 21,702.42/x
  3. Step 3: Cross multiply
    39,605.85x = 54,657.45 × 21,702.42
  4. Step 4: Simplify right side
    39,605.85x = 1,186,198,936.03
  5. Step 5: Solve for x
    x = 1,186,198,936.03/39,605.85
  6. Step 6: Final answer
    x = 29,950.09

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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.