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Finding the Fourth Proportional to 10,863.12, 14,990.88 and 5,895.12

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Solution

The fourth proportional to 10,863.12, 14,990.88 and 5,895.12 is: 8,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.12 : 14,990.88 = 5,895.12 : x
  2. Step 2: Convert to fraction form
    10,863.12/14,990.88 = 5,895.12/x
  3. Step 3: Cross multiply
    10,863.12x = 14,990.88 × 5,895.12
  4. Step 4: Simplify right side
    10,863.12x = 88,373,036.51
  5. Step 5: Solve for x
    x = 88,373,036.51/10,863.12
  6. Step 6: Final answer
    x = 8,135.14

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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.