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Finding the Fourth Proportional to 15,047.01, 20,765.10 and 8,670.09

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Solution

The fourth proportional to 15,047.01, 20,765.10 and 8,670.09 is: 11,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.01 : 20,765.10 = 8,670.09 : x
  2. Step 2: Convert to fraction form
    15,047.01/20,765.10 = 8,670.09/x
  3. Step 3: Cross multiply
    15,047.01x = 20,765.10 × 8,670.09
  4. Step 4: Simplify right side
    15,047.01x = 180,035,285.86
  5. Step 5: Solve for x
    x = 180,035,285.86/15,047.01
  6. Step 6: Final answer
    x = 11,964.85

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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.