Home / 20,734.70-28,610.16-11,657.45

Finding the Fourth Proportional to 20,734.70, 28,610.16 and 11,657.45

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Solution

The fourth proportional to 20,734.70, 28,610.16 and 11,657.45 is: 16,085.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.70 : 28,610.16 = 11,657.45 : x
  2. Step 2: Convert to fraction form
    20,734.70/28,610.16 = 11,657.45/x
  3. Step 3: Cross multiply
    20,734.70x = 28,610.16 × 11,657.45
  4. Step 4: Simplify right side
    20,734.70x = 333,521,524.28
  5. Step 5: Solve for x
    x = 333,521,524.28/20,734.70
  6. Step 6: Final answer
    x = 16,085.19

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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.