Home / 20,657.92-28,505.61-11,703.51

Finding the Fourth Proportional to 20,657.92, 28,505.61 and 11,703.51

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Solution

The fourth proportional to 20,657.92, 28,505.61 and 11,703.51 is: 16,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.92 : 28,505.61 = 11,703.51 : x
  2. Step 2: Convert to fraction form
    20,657.92/28,505.61 = 11,703.51/x
  3. Step 3: Cross multiply
    20,657.92x = 28,505.61 × 11,703.51
  4. Step 4: Simplify right side
    20,657.92x = 333,615,691.69
  5. Step 5: Solve for x
    x = 333,615,691.69/20,657.92
  6. Step 6: Final answer
    x = 16,149.53

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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.