Home / 21,158.75-31,748.49-14,958.61

Finding the Fourth Proportional to 21,158.75, 31,748.49 and 14,958.61

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Solution

The fourth proportional to 21,158.75, 31,748.49 and 14,958.61 is: 22,445.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.75 : 31,748.49 = 14,958.61 : x
  2. Step 2: Convert to fraction form
    21,158.75/31,748.49 = 14,958.61/x
  3. Step 3: Cross multiply
    21,158.75x = 31,748.49 × 14,958.61
  4. Step 4: Simplify right side
    21,158.75x = 474,913,200.63
  5. Step 5: Solve for x
    x = 474,913,200.63/21,158.75
  6. Step 6: Final answer
    x = 22,445.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.