Home / 10,872.40-16,276.20-6,487.60

Finding the Fourth Proportional to 10,872.40, 16,276.20 and 6,487.60

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Solution

The fourth proportional to 10,872.40, 16,276.20 and 6,487.60 is: 9,712.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872.40 : 16,276.20 = 6,487.60 : x
  2. Step 2: Convert to fraction form
    10,872.40/16,276.20 = 6,487.60/x
  3. Step 3: Cross multiply
    10,872.40x = 16,276.20 × 6,487.60
  4. Step 4: Simplify right side
    10,872.40x = 105,593,475.12
  5. Step 5: Solve for x
    x = 105,593,475.12/10,872.40
  6. Step 6: Final answer
    x = 9,712.07

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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.