Home / 20,444.72-28,206.71-13,283.65

Finding the Fourth Proportional to 20,444.72, 28,206.71 and 13,283.65

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Solution

The fourth proportional to 20,444.72, 28,206.71 and 13,283.65 is: 18,326.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,444.72 : 28,206.71 = 13,283.65 : x
  2. Step 2: Convert to fraction form
    20,444.72/28,206.71 = 13,283.65/x
  3. Step 3: Cross multiply
    20,444.72x = 28,206.71 × 13,283.65
  4. Step 4: Simplify right side
    20,444.72x = 374,687,922.26
  5. Step 5: Solve for x
    x = 374,687,922.26/20,444.72
  6. Step 6: Final answer
    x = 18,326.88

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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.