Home / 20,998,510.80-31,497,766.20-19,203,421.20

Finding the Fourth Proportional to 20,998,510.80, 31,497,766.20 and 19,203,421.20

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Solution

The fourth proportional to 20,998,510.80, 31,497,766.20 and 19,203,421.20 is: 28,805,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998,510.80 : 31,497,766.20 = 19,203,421.20 : x
  2. Step 2: Convert to fraction form
    20,998,510.80/31,497,766.20 = 19,203,421.20/x
  3. Step 3: Cross multiply
    20,998,510.80x = 31,497,766.20 × 19,203,421.20
  4. Step 4: Simplify right side
    20,998,510.80x = 604,864,871,197,723.38
  5. Step 5: Solve for x
    x = 604,864,871,197,723.38/20,998,510.80
  6. Step 6: Final answer
    x = 28,805,131.80

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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.