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Finding the Fourth Proportional to 10,863, 14,990.96 and 6,147.18

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Solution

The fourth proportional to 10,863, 14,990.96 and 6,147.18 is: 8,483.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863 : 14,990.96 = 6,147.18 : x
  2. Step 2: Convert to fraction form
    10,863/14,990.96 = 6,147.18/x
  3. Step 3: Cross multiply
    10,863x = 14,990.96 × 6,147.18
  4. Step 4: Simplify right side
    10,863x = 92,152,129.49
  5. Step 5: Solve for x
    x = 92,152,129.49/10,863
  6. Step 6: Final answer
    x = 8,483.12

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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.