Home / 8,665,980.78-11,971,510.50-6,921,359.60

Finding the Fourth Proportional to 8,665,980.78, 11,971,510.50 and 6,921,359.60

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Solution

The fourth proportional to 8,665,980.78, 11,971,510.50 and 6,921,359.60 is: 9,561,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665,980.78 : 11,971,510.50 = 6,921,359.60 : x
  2. Step 2: Convert to fraction form
    8,665,980.78/11,971,510.50 = 6,921,359.60/x
  3. Step 3: Cross multiply
    8,665,980.78x = 11,971,510.50 × 6,921,359.60
  4. Step 4: Simplify right side
    8,665,980.78x = 82,859,129,125,675.80
  5. Step 5: Solve for x
    x = 82,859,129,125,675.80/8,665,980.78
  6. Step 6: Final answer
    x = 9,561,425.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.