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Finding the Fourth Proportional to 10,785.80, 14,883.78 and 6,069.80

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Solution

The fourth proportional to 10,785.80, 14,883.78 and 6,069.80 is: 8,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.80 : 14,883.78 = 6,069.80 : x
  2. Step 2: Convert to fraction form
    10,785.80/14,883.78 = 6,069.80/x
  3. Step 3: Cross multiply
    10,785.80x = 14,883.78 × 6,069.80
  4. Step 4: Simplify right side
    10,785.80x = 90,341,567.84
  5. Step 5: Solve for x
    x = 90,341,567.84/10,785.80
  6. Step 6: Final answer
    x = 8,375.97

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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.