Home / 10,813.20-16,188.41-9,687.70

Finding the Fourth Proportional to 10,813.20, 16,188.41 and 9,687.70

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Solution

The fourth proportional to 10,813.20, 16,188.41 and 9,687.70 is: 14,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,813.20 : 16,188.41 = 9,687.70 : x
  2. Step 2: Convert to fraction form
    10,813.20/16,188.41 = 9,687.70/x
  3. Step 3: Cross multiply
    10,813.20x = 16,188.41 × 9,687.70
  4. Step 4: Simplify right side
    10,813.20x = 156,828,411.12
  5. Step 5: Solve for x
    x = 156,828,411.12/10,813.20
  6. Step 6: Final answer
    x = 14,503.43

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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.