Home / 10,630.24-15,930.76-5,425.20

Finding the Fourth Proportional to 10,630.24, 15,930.76 and 5,425.20

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Solution

The fourth proportional to 10,630.24, 15,930.76 and 5,425.20 is: 8,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,630.24 : 15,930.76 = 5,425.20 : x
  2. Step 2: Convert to fraction form
    10,630.24/15,930.76 = 5,425.20/x
  3. Step 3: Cross multiply
    10,630.24x = 15,930.76 × 5,425.20
  4. Step 4: Simplify right side
    10,630.24x = 86,427,559.15
  5. Step 5: Solve for x
    x = 86,427,559.15/10,630.24
  6. Step 6: Final answer
    x = 8,130.35

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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.