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Finding the Fourth Proportional to 10,411.95, 14,378.98 and 6,636.89

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Solution

The fourth proportional to 10,411.95, 14,378.98 and 6,636.89 is: 9,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,411.95 : 14,378.98 = 6,636.89 : x
  2. Step 2: Convert to fraction form
    10,411.95/14,378.98 = 6,636.89/x
  3. Step 3: Cross multiply
    10,411.95x = 14,378.98 × 6,636.89
  4. Step 4: Simplify right side
    10,411.95x = 95,431,708.57
  5. Step 5: Solve for x
    x = 95,431,708.57/10,411.95
  6. Step 6: Final answer
    x = 9,165.59

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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.