Home / 42,629.60-63,949.20-13,047.20

Finding the Fourth Proportional to 42,629.60, 63,949.20 and 13,047.20

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Solution

The fourth proportional to 42,629.60, 63,949.20 and 13,047.20 is: 19,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,629.60 : 63,949.20 = 13,047.20 : x
  2. Step 2: Convert to fraction form
    42,629.60/63,949.20 = 13,047.20/x
  3. Step 3: Cross multiply
    42,629.60x = 63,949.20 × 13,047.20
  4. Step 4: Simplify right side
    42,629.60x = 834,358,002.24
  5. Step 5: Solve for x
    x = 834,358,002.24/42,629.60
  6. Step 6: Final answer
    x = 19,572.27

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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.