Home / 10,966.28-15,132.30-6,490.22

Finding the Fourth Proportional to 10,966.28, 15,132.30 and 6,490.22

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Solution

The fourth proportional to 10,966.28, 15,132.30 and 6,490.22 is: 8,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.28 : 15,132.30 = 6,490.22 : x
  2. Step 2: Convert to fraction form
    10,966.28/15,132.30 = 6,490.22/x
  3. Step 3: Cross multiply
    10,966.28x = 15,132.30 × 6,490.22
  4. Step 4: Simplify right side
    10,966.28x = 98,211,956.11
  5. Step 5: Solve for x
    x = 98,211,956.11/10,966.28
  6. Step 6: Final answer
    x = 8,955.81

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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.