Home / 20,659.16-28,509.36-11,227.76

Finding the Fourth Proportional to 20,659.16, 28,509.36 and 11,227.76

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Solution

The fourth proportional to 20,659.16, 28,509.36 and 11,227.76 is: 15,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.16 : 28,509.36 = 11,227.76 : x
  2. Step 2: Convert to fraction form
    20,659.16/28,509.36 = 11,227.76/x
  3. Step 3: Cross multiply
    20,659.16x = 28,509.36 × 11,227.76
  4. Step 4: Simplify right side
    20,659.16x = 320,096,251.83
  5. Step 5: Solve for x
    x = 320,096,251.83/20,659.16
  6. Step 6: Final answer
    x = 15,494.16

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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.