Home / 20,790.76-28,691.67-11,359.93

Finding the Fourth Proportional to 20,790.76, 28,691.67 and 11,359.93

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Solution

The fourth proportional to 20,790.76, 28,691.67 and 11,359.93 is: 15,676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.76 : 28,691.67 = 11,359.93 : x
  2. Step 2: Convert to fraction form
    20,790.76/28,691.67 = 11,359.93/x
  3. Step 3: Cross multiply
    20,790.76x = 28,691.67 × 11,359.93
  4. Step 4: Simplify right side
    20,790.76x = 325,935,362.78
  5. Step 5: Solve for x
    x = 325,935,362.78/20,790.76
  6. Step 6: Final answer
    x = 15,676.93

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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.