Home / 13,138.30-19,719.60-6,569.20

Finding the Fourth Proportional to 13,138.30, 19,719.60 and 6,569.20

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Solution

The fourth proportional to 13,138.30, 19,719.60 and 6,569.20 is: 9,859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.30 : 19,719.60 = 6,569.20 : x
  2. Step 2: Convert to fraction form
    13,138.30/19,719.60 = 6,569.20/x
  3. Step 3: Cross multiply
    13,138.30x = 19,719.60 × 6,569.20
  4. Step 4: Simplify right side
    13,138.30x = 129,541,996.32
  5. Step 5: Solve for x
    x = 129,541,996.32/13,138.30
  6. Step 6: Final answer
    x = 9,859.88

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1.5x scale

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.