Home / 20,932.66-28,887.08-11,501.22

Finding the Fourth Proportional to 20,932.66, 28,887.08 and 11,501.22

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Solution

The fourth proportional to 20,932.66, 28,887.08 and 11,501.22 is: 15,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.66 : 28,887.08 = 11,501.22 : x
  2. Step 2: Convert to fraction form
    20,932.66/28,887.08 = 11,501.22/x
  3. Step 3: Cross multiply
    20,932.66x = 28,887.08 × 11,501.22
  4. Step 4: Simplify right side
    20,932.66x = 332,236,713.06
  5. Step 5: Solve for x
    x = 332,236,713.06/20,932.66
  6. Step 6: Final answer
    x = 15,871.69

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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.