Home / 18,972,311.60-28,459,254.72-5,509,139.60

Finding the Fourth Proportional to 18,972,311.60, 28,459,254.72 and 5,509,139.60

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Solution

The fourth proportional to 18,972,311.60, 28,459,254.72 and 5,509,139.60 is: 8,263,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972,311.60 : 28,459,254.72 = 5,509,139.60 : x
  2. Step 2: Convert to fraction form
    18,972,311.60/28,459,254.72 = 5,509,139.60/x
  3. Step 3: Cross multiply
    18,972,311.60x = 28,459,254.72 × 5,509,139.60
  4. Step 4: Simplify right side
    18,972,311.60x = 156,786,007,164,438.91
  5. Step 5: Solve for x
    x = 156,786,007,164,438.91/18,972,311.60
  6. Step 6: Final answer
    x = 8,263,938.02

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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.