Home / 12,811,712.60-17,679,635.70-7,657,915.88

Finding the Fourth Proportional to 12,811,712.60, 17,679,635.70 and 7,657,915.88

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Solution

The fourth proportional to 12,811,712.60, 17,679,635.70 and 7,657,915.88 is: 10,567,608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811,712.60 : 17,679,635.70 = 7,657,915.88 : x
  2. Step 2: Convert to fraction form
    12,811,712.60/17,679,635.70 = 7,657,915.88/x
  3. Step 3: Cross multiply
    12,811,712.60x = 17,679,635.70 × 7,657,915.88
  4. Step 4: Simplify right side
    12,811,712.60x = 135,389,162,979,644.91
  5. Step 5: Solve for x
    x = 135,389,162,979,644.91/12,811,712.60
  6. Step 6: Final answer
    x = 10,567,608.50

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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.