Home / 13,987.04-20,930.24-10,280

Finding the Fourth Proportional to 13,987.04, 20,930.24 and 10,280

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Solution

The fourth proportional to 13,987.04, 20,930.24 and 10,280 is: 15,383.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.04 : 20,930.24 = 10,280 : x
  2. Step 2: Convert to fraction form
    13,987.04/20,930.24 = 10,280/x
  3. Step 3: Cross multiply
    13,987.04x = 20,930.24 × 10,280
  4. Step 4: Simplify right side
    13,987.04x = 215,162,867.20
  5. Step 5: Solve for x
    x = 215,162,867.20/13,987.04
  6. Step 6: Final answer
    x = 15,383.02

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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.