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Finding the Fourth Proportional to 15,073.08, 20,800.76 and 8,358.72

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Solution

The fourth proportional to 15,073.08, 20,800.76 and 8,358.72 is: 11,534.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.08 : 20,800.76 = 8,358.72 : x
  2. Step 2: Convert to fraction form
    15,073.08/20,800.76 = 8,358.72/x
  3. Step 3: Cross multiply
    15,073.08x = 20,800.76 × 8,358.72
  4. Step 4: Simplify right side
    15,073.08x = 173,867,728.63
  5. Step 5: Solve for x
    x = 173,867,728.63/15,073.08
  6. Step 6: Final answer
    x = 11,534.98

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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.