Home / 20,531.56-28,326.61-16,748.15

Finding the Fourth Proportional to 20,531.56, 28,326.61 and 16,748.15

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Solution

The fourth proportional to 20,531.56, 28,326.61 and 16,748.15 is: 23,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.56 : 28,326.61 = 16,748.15 : x
  2. Step 2: Convert to fraction form
    20,531.56/28,326.61 = 16,748.15/x
  3. Step 3: Cross multiply
    20,531.56x = 28,326.61 × 16,748.15
  4. Step 4: Simplify right side
    20,531.56x = 474,418,313.27
  5. Step 5: Solve for x
    x = 474,418,313.27/20,531.56
  6. Step 6: Final answer
    x = 23,106.78

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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.