Home / 20,798.80-28,701.92-11,367.43

Finding the Fourth Proportional to 20,798.80, 28,701.92 and 11,367.43

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Solution

The fourth proportional to 20,798.80, 28,701.92 and 11,367.43 is: 15,686.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.80 : 28,701.92 = 11,367.43 : x
  2. Step 2: Convert to fraction form
    20,798.80/28,701.92 = 11,367.43/x
  3. Step 3: Cross multiply
    20,798.80x = 28,701.92 × 11,367.43
  4. Step 4: Simplify right side
    20,798.80x = 326,266,866.12
  5. Step 5: Solve for x
    x = 326,266,866.12/20,798.80
  6. Step 6: Final answer
    x = 15,686.82

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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.