Home / 20,736,042.80-31,104,064.20-18,468,561.20

Finding the Fourth Proportional to 20,736,042.80, 31,104,064.20 and 18,468,561.20

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Solution

The fourth proportional to 20,736,042.80, 31,104,064.20 and 18,468,561.20 is: 27,702,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,042.80 : 31,104,064.20 = 18,468,561.20 : x
  2. Step 2: Convert to fraction form
    20,736,042.80/31,104,064.20 = 18,468,561.20/x
  3. Step 3: Cross multiply
    20,736,042.80x = 31,104,064.20 × 18,468,561.20
  4. Step 4: Simplify right side
    20,736,042.80x = 574,447,313,246,429
  5. Step 5: Solve for x
    x = 574,447,313,246,429/20,736,042.80
  6. Step 6: Final answer
    x = 27,702,841.80

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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.