Home / 20,733,121.20-31,099,681.80-9,218,566.20

Finding the Fourth Proportional to 20,733,121.20, 31,099,681.80 and 9,218,566.20

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Solution

The fourth proportional to 20,733,121.20, 31,099,681.80 and 9,218,566.20 is: 13,827,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733,121.20 : 31,099,681.80 = 9,218,566.20 : x
  2. Step 2: Convert to fraction form
    20,733,121.20/31,099,681.80 = 9,218,566.20/x
  3. Step 3: Cross multiply
    20,733,121.20x = 31,099,681.80 × 9,218,566.20
  4. Step 4: Simplify right side
    20,733,121.20x = 286,694,475,472,235.12
  5. Step 5: Solve for x
    x = 286,694,475,472,235.12/20,733,121.20
  6. Step 6: Final answer
    x = 13,827,849.30

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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.