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Finding the Fourth Proportional to 15,047.76, 20,766.08 and 8,333.50

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Solution

The fourth proportional to 15,047.76, 20,766.08 and 8,333.50 is: 11,500.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.76 : 20,766.08 = 8,333.50 : x
  2. Step 2: Convert to fraction form
    15,047.76/20,766.08 = 8,333.50/x
  3. Step 3: Cross multiply
    15,047.76x = 20,766.08 × 8,333.50
  4. Step 4: Simplify right side
    15,047.76x = 173,054,006.91
  5. Step 5: Solve for x
    x = 173,054,006.91/15,047.76
  6. Step 6: Final answer
    x = 11,500.32

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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.