Home / 20,503,330.40-30,734,000.40-11,979,279.20

Finding the Fourth Proportional to 20,503,330.40, 30,734,000.40 and 11,979,279.20

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Solution

The fourth proportional to 20,503,330.40, 30,734,000.40 and 11,979,279.20 is: 17,956,652.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503,330.40 : 30,734,000.40 = 11,979,279.20 : x
  2. Step 2: Convert to fraction form
    20,503,330.40/30,734,000.40 = 11,979,279.20/x
  3. Step 3: Cross multiply
    20,503,330.40x = 30,734,000.40 × 11,979,279.20
  4. Step 4: Simplify right side
    20,503,330.40x = 368,171,171,724,511.62
  5. Step 5: Solve for x
    x = 368,171,171,724,511.62/20,503,330.40
  6. Step 6: Final answer
    x = 17,956,652.14

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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.