Home / 20,656,842.04-28,505,869.67-11,237,320.72

Finding the Fourth Proportional to 20,656,842.04, 28,505,869.67 and 11,237,320.72

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Solution

The fourth proportional to 20,656,842.04, 28,505,869.67 and 11,237,320.72 is: 15,507,191.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656,842.04 : 28,505,869.67 = 11,237,320.72 : x
  2. Step 2: Convert to fraction form
    20,656,842.04/28,505,869.67 = 11,237,320.72/x
  3. Step 3: Cross multiply
    20,656,842.04x = 28,505,869.67 × 11,237,320.72
  4. Step 4: Simplify right side
    20,656,842.04x = 320,329,599,884,310.62
  5. Step 5: Solve for x
    x = 320,329,599,884,310.62/20,656,842.04
  6. Step 6: Final answer
    x = 15,507,191.24

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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.