Home / 11,071.20-16,612.20-8,437.80

Finding the Fourth Proportional to 11,071.20, 16,612.20 and 8,437.80

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Solution

The fourth proportional to 11,071.20, 16,612.20 and 8,437.80 is: 12,660.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,071.20 : 16,612.20 = 8,437.80 : x
  2. Step 2: Convert to fraction form
    11,071.20/16,612.20 = 8,437.80/x
  3. Step 3: Cross multiply
    11,071.20x = 16,612.20 × 8,437.80
  4. Step 4: Simplify right side
    11,071.20x = 140,170,421.16
  5. Step 5: Solve for x
    x = 140,170,421.16/11,071.20
  6. Step 6: Final answer
    x = 12,660.82

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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.