Home / 10,116.90-15,142.95-5,425.38

Finding the Fourth Proportional to 10,116.90, 15,142.95 and 5,425.38

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Solution

The fourth proportional to 10,116.90, 15,142.95 and 5,425.38 is: 8,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,116.90 : 15,142.95 = 5,425.38 : x
  2. Step 2: Convert to fraction form
    10,116.90/15,142.95 = 5,425.38/x
  3. Step 3: Cross multiply
    10,116.90x = 15,142.95 × 5,425.38
  4. Step 4: Simplify right side
    10,116.90x = 82,156,258.07
  5. Step 5: Solve for x
    x = 82,156,258.07/10,116.90
  6. Step 6: Final answer
    x = 8,120.69

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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.