Home / 13,127.60-19,691.40-8,980.40

Finding the Fourth Proportional to 13,127.60, 19,691.40 and 8,980.40

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Solution

The fourth proportional to 13,127.60, 19,691.40 and 8,980.40 is: 13,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.60 : 19,691.40 = 8,980.40 : x
  2. Step 2: Convert to fraction form
    13,127.60/19,691.40 = 8,980.40/x
  3. Step 3: Cross multiply
    13,127.60x = 19,691.40 × 8,980.40
  4. Step 4: Simplify right side
    13,127.60x = 176,836,648.56
  5. Step 5: Solve for x
    x = 176,836,648.56/13,127.60
  6. Step 6: Final answer
    x = 13,470.60

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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.