Home / 20,656,841.04-28,505,868.29-11,237,319.72

Finding the Fourth Proportional to 20,656,841.04, 28,505,868.29 and 11,237,319.72

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Solution

The fourth proportional to 20,656,841.04, 28,505,868.29 and 11,237,319.72 is: 15,507,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656,841.04 : 28,505,868.29 = 11,237,319.72 : x
  2. Step 2: Convert to fraction form
    20,656,841.04/28,505,868.29 = 11,237,319.72/x
  3. Step 3: Cross multiply
    20,656,841.04x = 28,505,868.29 × 11,237,319.72
  4. Step 4: Simplify right side
    20,656,841.04x = 320,329,555,870,939.69
  5. Step 5: Solve for x
    x = 320,329,555,870,939.69/20,656,841.04
  6. Step 6: Final answer
    x = 15,507,189.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.