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Finding the Fourth Proportional to 10,868.60, 14,999.10 and 6,392.54

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Solution

The fourth proportional to 10,868.60, 14,999.10 and 6,392.54 is: 8,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.60 : 14,999.10 = 6,392.54 : x
  2. Step 2: Convert to fraction form
    10,868.60/14,999.10 = 6,392.54/x
  3. Step 3: Cross multiply
    10,868.60x = 14,999.10 × 6,392.54
  4. Step 4: Simplify right side
    10,868.60x = 95,882,346.71
  5. Step 5: Solve for x
    x = 95,882,346.71/10,868.60
  6. Step 6: Final answer
    x = 8,821.96

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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.