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Finding the Fourth Proportional to 10,662.60, 14,712.90 and 6,186.72

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Solution

The fourth proportional to 10,662.60, 14,712.90 and 6,186.72 is: 8,536.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.60 : 14,712.90 = 6,186.72 : x
  2. Step 2: Convert to fraction form
    10,662.60/14,712.90 = 6,186.72/x
  3. Step 3: Cross multiply
    10,662.60x = 14,712.90 × 6,186.72
  4. Step 4: Simplify right side
    10,662.60x = 91,024,592.69
  5. Step 5: Solve for x
    x = 91,024,592.69/10,662.60
  6. Step 6: Final answer
    x = 8,536.81

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1.5x scale

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.