Home / 20,669.91-28,523.88-11,718.24

Finding the Fourth Proportional to 20,669.91, 28,523.88 and 11,718.24

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Solution

The fourth proportional to 20,669.91, 28,523.88 and 11,718.24 is: 16,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.91 : 28,523.88 = 11,718.24 : x
  2. Step 2: Convert to fraction form
    20,669.91/28,523.88 = 11,718.24/x
  3. Step 3: Cross multiply
    20,669.91x = 28,523.88 × 11,718.24
  4. Step 4: Simplify right side
    20,669.91x = 334,249,671.57
  5. Step 5: Solve for x
    x = 334,249,671.57/20,669.91
  6. Step 6: Final answer
    x = 16,170.83

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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.