Home / 21,350,976.76-31,995,794.22-12,136,269.88

Finding the Fourth Proportional to 21,350,976.76, 31,995,794.22 and 12,136,269.88

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Solution

The fourth proportional to 21,350,976.76, 31,995,794.22 and 12,136,269.88 is: 18,186,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350,976.76 : 31,995,794.22 = 12,136,269.88 : x
  2. Step 2: Convert to fraction form
    21,350,976.76/31,995,794.22 = 12,136,269.88/x
  3. Step 3: Cross multiply
    21,350,976.76x = 31,995,794.22 × 12,136,269.88
  4. Step 4: Simplify right side
    21,350,976.76x = 388,309,593,678,864.12
  5. Step 5: Solve for x
    x = 388,309,593,678,864.12/21,350,976.76
  6. Step 6: Final answer
    x = 18,186,970.93

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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.