Home / 20,535,207.96-28,338,921.18-11,242,621.20

Finding the Fourth Proportional to 20,535,207.96, 28,338,921.18 and 11,242,621.20

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Solution

The fourth proportional to 20,535,207.96, 28,338,921.18 and 11,242,621.20 is: 15,515,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,207.96 : 28,338,921.18 = 11,242,621.20 : x
  2. Step 2: Convert to fraction form
    20,535,207.96/28,338,921.18 = 11,242,621.20/x
  3. Step 3: Cross multiply
    20,535,207.96x = 28,338,921.18 × 11,242,621.20
  4. Step 4: Simplify right side
    20,535,207.96x = 318,603,756,043,397
  5. Step 5: Solve for x
    x = 318,603,756,043,397/20,535,207.96
  6. Step 6: Final answer
    x = 15,515,000.22

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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.