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Finding the Fourth Proportional to 22,969.90, 34,458.90 and 8,187.40

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Solution

The fourth proportional to 22,969.90, 34,458.90 and 8,187.40 is: 12,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,969.90 : 34,458.90 = 8,187.40 : x
  2. Step 2: Convert to fraction form
    22,969.90/34,458.90 = 8,187.40/x
  3. Step 3: Cross multiply
    22,969.90x = 34,458.90 × 8,187.40
  4. Step 4: Simplify right side
    22,969.90x = 282,128,797.86
  5. Step 5: Solve for x
    x = 282,128,797.86/22,969.90
  6. Step 6: Final answer
    x = 12,282.54

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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.