Home / 20,535.91-28,339.04-11,582.71

Finding the Fourth Proportional to 20,535.91, 28,339.04 and 11,582.71

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Solution

The fourth proportional to 20,535.91, 28,339.04 and 11,582.71 is: 15,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.91 : 28,339.04 = 11,582.71 : x
  2. Step 2: Convert to fraction form
    20,535.91/28,339.04 = 11,582.71/x
  3. Step 3: Cross multiply
    20,535.91x = 28,339.04 × 11,582.71
  4. Step 4: Simplify right side
    20,535.91x = 328,242,840.11
  5. Step 5: Solve for x
    x = 328,242,840.11/20,535.91
  6. Step 6: Final answer
    x = 15,983.85

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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.