Home / 20,189,988.96-30,283,976.88-7,409,488.20

Finding the Fourth Proportional to 20,189,988.96, 30,283,976.88 and 7,409,488.20

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Solution

The fourth proportional to 20,189,988.96, 30,283,976.88 and 7,409,488.20 is: 11,113,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189,988.96 : 30,283,976.88 = 7,409,488.20 : x
  2. Step 2: Convert to fraction form
    20,189,988.96/30,283,976.88 = 7,409,488.20/x
  3. Step 3: Cross multiply
    20,189,988.96x = 30,283,976.88 × 7,409,488.20
  4. Step 4: Simplify right side
    20,189,988.96x = 224,388,769,341,432.81
  5. Step 5: Solve for x
    x = 224,388,769,341,432.81/20,189,988.96
  6. Step 6: Final answer
    x = 11,113,862.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.