Home / 12,867.60-19,301.40-9,149.70

Finding the Fourth Proportional to 12,867.60, 19,301.40 and 9,149.70

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Solution

The fourth proportional to 12,867.60, 19,301.40 and 9,149.70 is: 13,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.60 : 19,301.40 = 9,149.70 : x
  2. Step 2: Convert to fraction form
    12,867.60/19,301.40 = 9,149.70/x
  3. Step 3: Cross multiply
    12,867.60x = 19,301.40 × 9,149.70
  4. Step 4: Simplify right side
    12,867.60x = 176,602,019.58
  5. Step 5: Solve for x
    x = 176,602,019.58/12,867.60
  6. Step 6: Final answer
    x = 13,724.55

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Similar ratio
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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.