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Finding the Fourth Proportional to 22,740, 31,381.20 and 14,363.52

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Solution

The fourth proportional to 22,740, 31,381.20 and 14,363.52 is: 19,821.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,740 : 31,381.20 = 14,363.52 : x
  2. Step 2: Convert to fraction form
    22,740/31,381.20 = 14,363.52/x
  3. Step 3: Cross multiply
    22,740x = 31,381.20 × 14,363.52
  4. Step 4: Simplify right side
    22,740x = 450,744,493.82
  5. Step 5: Solve for x
    x = 450,744,493.82/22,740
  6. Step 6: Final answer
    x = 19,821.66

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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.