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Finding the Fourth Proportional to 19,266.60, 28,899.90 and 6,120.30

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Solution

The fourth proportional to 19,266.60, 28,899.90 and 6,120.30 is: 9,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.60 : 28,899.90 = 6,120.30 : x
  2. Step 2: Convert to fraction form
    19,266.60/28,899.90 = 6,120.30/x
  3. Step 3: Cross multiply
    19,266.60x = 28,899.90 × 6,120.30
  4. Step 4: Simplify right side
    19,266.60x = 176,876,057.97
  5. Step 5: Solve for x
    x = 176,876,057.97/19,266.60
  6. Step 6: Final answer
    x = 9,180.45

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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.