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Finding the Fourth Proportional to 15,010.12, 20,712.90 and 8,295.61

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Solution

The fourth proportional to 15,010.12, 20,712.90 and 8,295.61 is: 11,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.12 : 20,712.90 = 8,295.61 : x
  2. Step 2: Convert to fraction form
    15,010.12/20,712.90 = 8,295.61/x
  3. Step 3: Cross multiply
    15,010.12x = 20,712.90 × 8,295.61
  4. Step 4: Simplify right side
    15,010.12x = 171,826,140.37
  5. Step 5: Solve for x
    x = 171,826,140.37/15,010.12
  6. Step 6: Final answer
    x = 11,447.35

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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.