Home / 21,294,620.40-31,941,930.60-9,936,217.20

Finding the Fourth Proportional to 21,294,620.40, 31,941,930.60 and 9,936,217.20

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Solution

The fourth proportional to 21,294,620.40, 31,941,930.60 and 9,936,217.20 is: 14,904,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,620.40 : 31,941,930.60 = 9,936,217.20 : x
  2. Step 2: Convert to fraction form
    21,294,620.40/31,941,930.60 = 9,936,217.20/x
  3. Step 3: Cross multiply
    21,294,620.40x = 31,941,930.60 × 9,936,217.20
  4. Step 4: Simplify right side
    21,294,620.40x = 317,381,960,228,926.31
  5. Step 5: Solve for x
    x = 317,381,960,228,926.31/21,294,620.40
  6. Step 6: Final answer
    x = 14,904,325.80

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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.