Home / 13,966.40-20,932.32-8,402.24

Finding the Fourth Proportional to 13,966.40, 20,932.32 and 8,402.24

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Solution

The fourth proportional to 13,966.40, 20,932.32 and 8,402.24 is: 12,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,966.40 : 20,932.32 = 8,402.24 : x
  2. Step 2: Convert to fraction form
    13,966.40/20,932.32 = 8,402.24/x
  3. Step 3: Cross multiply
    13,966.40x = 20,932.32 × 8,402.24
  4. Step 4: Simplify right side
    13,966.40x = 175,878,376.40
  5. Step 5: Solve for x
    x = 175,878,376.40/13,966.40
  6. Step 6: Final answer
    x = 12,592.96

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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.