Home / 21,276,948.60-31,915,422.90-12,667,604.40

Finding the Fourth Proportional to 21,276,948.60, 31,915,422.90 and 12,667,604.40

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Solution

The fourth proportional to 21,276,948.60, 31,915,422.90 and 12,667,604.40 is: 19,001,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,948.60 : 31,915,422.90 = 12,667,604.40 : x
  2. Step 2: Convert to fraction form
    21,276,948.60/31,915,422.90 = 12,667,604.40/x
  3. Step 3: Cross multiply
    21,276,948.60x = 31,915,422.90 × 12,667,604.40
  4. Step 4: Simplify right side
    21,276,948.60x = 404,291,951,555,900.75
  5. Step 5: Solve for x
    x = 404,291,951,555,900.75/21,276,948.60
  6. Step 6: Final answer
    x = 19,001,406.60

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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.