Home / 20,535.66-28,339.47-11,582.33

Finding the Fourth Proportional to 20,535.66, 28,339.47 and 11,582.33

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Solution

The fourth proportional to 20,535.66, 28,339.47 and 11,582.33 is: 15,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.66 : 28,339.47 = 11,582.33 : x
  2. Step 2: Convert to fraction form
    20,535.66/28,339.47 = 11,582.33/x
  3. Step 3: Cross multiply
    20,535.66x = 28,339.47 × 11,582.33
  4. Step 4: Simplify right side
    20,535.66x = 328,236,951.87
  5. Step 5: Solve for x
    x = 328,236,951.87/20,535.66
  6. Step 6: Final answer
    x = 15,983.75

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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.