Home / 12,419.28-17,140.68-7,452.24

Finding the Fourth Proportional to 12,419.28, 17,140.68 and 7,452.24

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Solution

The fourth proportional to 12,419.28, 17,140.68 and 7,452.24 is: 10,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.28 : 17,140.68 = 7,452.24 : x
  2. Step 2: Convert to fraction form
    12,419.28/17,140.68 = 7,452.24/x
  3. Step 3: Cross multiply
    12,419.28x = 17,140.68 × 7,452.24
  4. Step 4: Simplify right side
    12,419.28x = 127,736,461.12
  5. Step 5: Solve for x
    x = 127,736,461.12/12,419.28
  6. Step 6: Final answer
    x = 10,285.34

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Half scale
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Double scale
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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.