Home / 10,142.28-13,987.62-6,604.20

Finding the Fourth Proportional to 10,142.28, 13,987.62 and 6,604.20

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Solution

The fourth proportional to 10,142.28, 13,987.62 and 6,604.20 is: 9,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.28 : 13,987.62 = 6,604.20 : x
  2. Step 2: Convert to fraction form
    10,142.28/13,987.62 = 6,604.20/x
  3. Step 3: Cross multiply
    10,142.28x = 13,987.62 × 6,604.20
  4. Step 4: Simplify right side
    10,142.28x = 92,377,040.00
  5. Step 5: Solve for x
    x = 92,377,040.00/10,142.28
  6. Step 6: Final answer
    x = 9,108.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.