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Finding the Fourth Proportional to 15,062.70, 20,784.84 and 8,346.66

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Solution

The fourth proportional to 15,062.70, 20,784.84 and 8,346.66 is: 11,517.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.70 : 20,784.84 = 8,346.66 : x
  2. Step 2: Convert to fraction form
    15,062.70/20,784.84 = 8,346.66/x
  3. Step 3: Cross multiply
    15,062.70x = 20,784.84 × 8,346.66
  4. Step 4: Simplify right side
    15,062.70x = 173,483,992.63
  5. Step 5: Solve for x
    x = 173,483,992.63/15,062.70
  6. Step 6: Final answer
    x = 11,517.46

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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.