Home / 20,589,901.68-28,388,211.23-15,073,700.03

Finding the Fourth Proportional to 20,589,901.68, 28,388,211.23 and 15,073,700.03

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Solution

The fourth proportional to 20,589,901.68, 28,388,211.23 and 15,073,700.03 is: 20,782,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589,901.68 : 28,388,211.23 = 15,073,700.03 : x
  2. Step 2: Convert to fraction form
    20,589,901.68/28,388,211.23 = 15,073,700.03/x
  3. Step 3: Cross multiply
    20,589,901.68x = 28,388,211.23 × 15,073,700.03
  4. Step 4: Simplify right side
    20,589,901.68x = 427,915,380,251,987.81
  5. Step 5: Solve for x
    x = 427,915,380,251,987.81/20,589,901.68
  6. Step 6: Final answer
    x = 20,782,779.19

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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.