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Finding the Fourth Proportional to 10,868.16, 14,989.92 and 7,327.68

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Solution

The fourth proportional to 10,868.16, 14,989.92 and 7,327.68 is: 10,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.16 : 14,989.92 = 7,327.68 : x
  2. Step 2: Convert to fraction form
    10,868.16/14,989.92 = 7,327.68/x
  3. Step 3: Cross multiply
    10,868.16x = 14,989.92 × 7,327.68
  4. Step 4: Simplify right side
    10,868.16x = 109,841,336.99
  5. Step 5: Solve for x
    x = 109,841,336.99/10,868.16
  6. Step 6: Final answer
    x = 10,106.71

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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.