Home / 20,535,208.46-28,338,921.89-11,242,621.70

Finding the Fourth Proportional to 20,535,208.46, 28,338,921.89 and 11,242,621.70

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Solution

The fourth proportional to 20,535,208.46, 28,338,921.89 and 11,242,621.70 is: 15,515,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,208.46 : 28,338,921.89 = 11,242,621.70 : x
  2. Step 2: Convert to fraction form
    20,535,208.46/28,338,921.89 = 11,242,621.70/x
  3. Step 3: Cross multiply
    20,535,208.46x = 28,338,921.89 × 11,242,621.70
  4. Step 4: Simplify right side
    20,535,208.46x = 318,603,778,195,119
  5. Step 5: Solve for x
    x = 318,603,778,195,119/20,535,208.46
  6. Step 6: Final answer
    x = 15,515,000.92

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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.