Home / 10,388.76-14,342.38-6,862.20

Finding the Fourth Proportional to 10,388.76, 14,342.38 and 6,862.20

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Solution

The fourth proportional to 10,388.76, 14,342.38 and 6,862.20 is: 9,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.76 : 14,342.38 = 6,862.20 : x
  2. Step 2: Convert to fraction form
    10,388.76/14,342.38 = 6,862.20/x
  3. Step 3: Cross multiply
    10,388.76x = 14,342.38 × 6,862.20
  4. Step 4: Simplify right side
    10,388.76x = 98,420,280.04
  5. Step 5: Solve for x
    x = 98,420,280.04/10,388.76
  6. Step 6: Final answer
    x = 9,473.73

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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.