Home / 8,221,331.80-12,331,997.70-8,079,614.20

Finding the Fourth Proportional to 8,221,331.80, 12,331,997.70 and 8,079,614.20

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Solution

The fourth proportional to 8,221,331.80, 12,331,997.70 and 8,079,614.20 is: 12,119,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,331.80 : 12,331,997.70 = 8,079,614.20 : x
  2. Step 2: Convert to fraction form
    8,221,331.80/12,331,997.70 = 8,079,614.20/x
  3. Step 3: Cross multiply
    8,221,331.80x = 12,331,997.70 × 8,079,614.20
  4. Step 4: Simplify right side
    8,221,331.80x = 99,637,783,731,287.34
  5. Step 5: Solve for x
    x = 99,637,783,731,287.34/8,221,331.80
  6. Step 6: Final answer
    x = 12,119,421.30

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Similar ratio
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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.