Home / 13,631.32-20,434.02-8,687.08

Finding the Fourth Proportional to 13,631.32, 20,434.02 and 8,687.08

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Solution

The fourth proportional to 13,631.32, 20,434.02 and 8,687.08 is: 13,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.32 : 20,434.02 = 8,687.08 : x
  2. Step 2: Convert to fraction form
    13,631.32/20,434.02 = 8,687.08/x
  3. Step 3: Cross multiply
    13,631.32x = 20,434.02 × 8,687.08
  4. Step 4: Simplify right side
    13,631.32x = 177,511,966.46
  5. Step 5: Solve for x
    x = 177,511,966.46/13,631.32
  6. Step 6: Final answer
    x = 13,022.36

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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.