Home / 20,687,069.20-31,009,312.30-9,177,956.60

Finding the Fourth Proportional to 20,687,069.20, 31,009,312.30 and 9,177,956.60

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Solution

The fourth proportional to 20,687,069.20, 31,009,312.30 and 9,177,956.60 is: 13,757,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,069.20 : 31,009,312.30 = 9,177,956.60 : x
  2. Step 2: Convert to fraction form
    20,687,069.20/31,009,312.30 = 9,177,956.60/x
  3. Step 3: Cross multiply
    20,687,069.20x = 31,009,312.30 × 9,177,956.60
  4. Step 4: Simplify right side
    20,687,069.20x = 284,602,122,485,246.19
  5. Step 5: Solve for x
    x = 284,602,122,485,246.19/20,687,069.20
  6. Step 6: Final answer
    x = 13,757,488.78

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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.