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Finding the Fourth Proportional to 39,398.50, 54,369.93 and 22,631.50

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Solution

The fourth proportional to 39,398.50, 54,369.93 and 22,631.50 is: 31,231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398.50 : 54,369.93 = 22,631.50 : x
  2. Step 2: Convert to fraction form
    39,398.50/54,369.93 = 22,631.50/x
  3. Step 3: Cross multiply
    39,398.50x = 54,369.93 × 22,631.50
  4. Step 4: Simplify right side
    39,398.50x = 1,230,473,070.80
  5. Step 5: Solve for x
    x = 1,230,473,070.80/39,398.50
  6. Step 6: Final answer
    x = 31,231.47

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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.