Home / 21,276,960.10-31,915,440.15-12,667,615.90

Finding the Fourth Proportional to 21,276,960.10, 31,915,440.15 and 12,667,615.90

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Solution

The fourth proportional to 21,276,960.10, 31,915,440.15 and 12,667,615.90 is: 19,001,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,960.10 : 31,915,440.15 = 12,667,615.90 : x
  2. Step 2: Convert to fraction form
    21,276,960.10/31,915,440.15 = 12,667,615.90/x
  3. Step 3: Cross multiply
    21,276,960.10x = 31,915,440.15 × 12,667,615.90
  4. Step 4: Simplify right side
    21,276,960.10x = 404,292,537,099,638.38
  5. Step 5: Solve for x
    x = 404,292,537,099,638.38/21,276,960.10
  6. Step 6: Final answer
    x = 19,001,423.85

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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.