Home / 12,543,213.60-18,821,041.20-7,156,000.80

Finding the Fourth Proportional to 12,543,213.60, 18,821,041.20 and 7,156,000.80

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Solution

The fourth proportional to 12,543,213.60, 18,821,041.20 and 7,156,000.80 is: 10,737,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543,213.60 : 18,821,041.20 = 7,156,000.80 : x
  2. Step 2: Convert to fraction form
    12,543,213.60/18,821,041.20 = 7,156,000.80/x
  3. Step 3: Cross multiply
    12,543,213.60x = 18,821,041.20 × 7,156,000.80
  4. Step 4: Simplify right side
    12,543,213.60x = 134,683,385,884,032.95
  5. Step 5: Solve for x
    x = 134,683,385,884,032.95/12,543,213.60
  6. Step 6: Final answer
    x = 10,737,550.21

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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.