Home / 10,427.72-15,630.60-6,479

Finding the Fourth Proportional to 10,427.72, 15,630.60 and 6,479

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Solution

The fourth proportional to 10,427.72, 15,630.60 and 6,479 is: 9,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,427.72 : 15,630.60 = 6,479 : x
  2. Step 2: Convert to fraction form
    10,427.72/15,630.60 = 6,479/x
  3. Step 3: Cross multiply
    10,427.72x = 15,630.60 × 6,479
  4. Step 4: Simplify right side
    10,427.72x = 101,270,657.40
  5. Step 5: Solve for x
    x = 101,270,657.40/10,427.72
  6. Step 6: Final answer
    x = 9,711.68

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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.