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Finding the Fourth Proportional to 10,656.60, 15,974.10 and 6,271.80

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Solution

The fourth proportional to 10,656.60, 15,974.10 and 6,271.80 is: 9,401.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.60 : 15,974.10 = 6,271.80 : x
  2. Step 2: Convert to fraction form
    10,656.60/15,974.10 = 6,271.80/x
  3. Step 3: Cross multiply
    10,656.60x = 15,974.10 × 6,271.80
  4. Step 4: Simplify right side
    10,656.60x = 100,186,360.38
  5. Step 5: Solve for x
    x = 100,186,360.38/10,656.60
  6. Step 6: Final answer
    x = 9,401.34

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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.