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Finding the Fourth Proportional to 15,149.95, 20,901.52 and 8,773.06

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Solution

The fourth proportional to 15,149.95, 20,901.52 and 8,773.06 is: 12,103.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.95 : 20,901.52 = 8,773.06 : x
  2. Step 2: Convert to fraction form
    15,149.95/20,901.52 = 8,773.06/x
  3. Step 3: Cross multiply
    15,149.95x = 20,901.52 × 8,773.06
  4. Step 4: Simplify right side
    15,149.95x = 183,370,289.05
  5. Step 5: Solve for x
    x = 183,370,289.05/15,149.95
  6. Step 6: Final answer
    x = 12,103.69

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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.