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Finding the Fourth Proportional to 15,000.75, 20,701.04 and 8,376.75

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Solution

The fourth proportional to 15,000.75, 20,701.04 and 8,376.75 is: 11,559.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.75 : 20,701.04 = 8,376.75 : x
  2. Step 2: Convert to fraction form
    15,000.75/20,701.04 = 8,376.75/x
  3. Step 3: Cross multiply
    15,000.75x = 20,701.04 × 8,376.75
  4. Step 4: Simplify right side
    15,000.75x = 173,407,394.94
  5. Step 5: Solve for x
    x = 173,407,394.94/15,000.75
  6. Step 6: Final answer
    x = 11,559.92

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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.