Home / 39,221.42-54,125.98-21,316.43

Finding the Fourth Proportional to 39,221.42, 54,125.98 and 21,316.43

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Solution

The fourth proportional to 39,221.42, 54,125.98 and 21,316.43 is: 29,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.42 : 54,125.98 = 21,316.43 : x
  2. Step 2: Convert to fraction form
    39,221.42/54,125.98 = 21,316.43/x
  3. Step 3: Cross multiply
    39,221.42x = 54,125.98 × 21,316.43
  4. Step 4: Simplify right side
    39,221.42x = 1,153,772,663.85
  5. Step 5: Solve for x
    x = 1,153,772,663.85/39,221.42
  6. Step 6: Final answer
    x = 29,416.90

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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.