Home / 10,652.28-15,981.30-4,078.20

Finding the Fourth Proportional to 10,652.28, 15,981.30 and 4,078.20

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Solution

The fourth proportional to 10,652.28, 15,981.30 and 4,078.20 is: 6,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652.28 : 15,981.30 = 4,078.20 : x
  2. Step 2: Convert to fraction form
    10,652.28/15,981.30 = 4,078.20/x
  3. Step 3: Cross multiply
    10,652.28x = 15,981.30 × 4,078.20
  4. Step 4: Simplify right side
    10,652.28x = 65,174,937.66
  5. Step 5: Solve for x
    x = 65,174,937.66/10,652.28
  6. Step 6: Final answer
    x = 6,118.40

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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.