Home / 21,069,712.92-31,604,610.06-8,121,960.84

Finding the Fourth Proportional to 21,069,712.92, 31,604,610.06 and 8,121,960.84

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Solution

The fourth proportional to 21,069,712.92, 31,604,610.06 and 8,121,960.84 is: 12,182,956.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,712.92 : 31,604,610.06 = 8,121,960.84 : x
  2. Step 2: Convert to fraction form
    21,069,712.92/31,604,610.06 = 8,121,960.84/x
  3. Step 3: Cross multiply
    21,069,712.92x = 31,604,610.06 × 8,121,960.84
  4. Step 4: Simplify right side
    21,069,712.92x = 256,691,405,270,790.03
  5. Step 5: Solve for x
    x = 256,691,405,270,790.03/21,069,712.92
  6. Step 6: Final answer
    x = 12,182,956.94

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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.