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Finding the Fourth Proportional to 10,618.80, 15,925.84 and 6,443.83

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Solution

The fourth proportional to 10,618.80, 15,925.84 and 6,443.83 is: 9,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.80 : 15,925.84 = 6,443.83 : x
  2. Step 2: Convert to fraction form
    10,618.80/15,925.84 = 6,443.83/x
  3. Step 3: Cross multiply
    10,618.80x = 15,925.84 × 6,443.83
  4. Step 4: Simplify right side
    10,618.80x = 102,623,382.70
  5. Step 5: Solve for x
    x = 102,623,382.70/10,618.80
  6. Step 6: Final answer
    x = 9,664.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.