Home / 20,949.30-31,460.40-14,752.80

Finding the Fourth Proportional to 20,949.30, 31,460.40 and 14,752.80

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Solution

The fourth proportional to 20,949.30, 31,460.40 and 14,752.80 is: 22,154.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.30 : 31,460.40 = 14,752.80 : x
  2. Step 2: Convert to fraction form
    20,949.30/31,460.40 = 14,752.80/x
  3. Step 3: Cross multiply
    20,949.30x = 31,460.40 × 14,752.80
  4. Step 4: Simplify right side
    20,949.30x = 464,128,989.12
  5. Step 5: Solve for x
    x = 464,128,989.12/20,949.30
  6. Step 6: Final answer
    x = 22,154.87

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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.