Home / 13,145,125.80-19,717,688.70-12,137,356.20

Finding the Fourth Proportional to 13,145,125.80, 19,717,688.70 and 12,137,356.20

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Solution

The fourth proportional to 13,145,125.80, 19,717,688.70 and 12,137,356.20 is: 18,206,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145,125.80 : 19,717,688.70 = 12,137,356.20 : x
  2. Step 2: Convert to fraction form
    13,145,125.80/19,717,688.70 = 12,137,356.20/x
  3. Step 3: Cross multiply
    13,145,125.80x = 19,717,688.70 × 12,137,356.20
  4. Step 4: Simplify right side
    13,145,125.80x = 239,320,611,192,614.91
  5. Step 5: Solve for x
    x = 239,320,611,192,614.91/13,145,125.80
  6. Step 6: Final answer
    x = 18,206,034.30

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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.