Home / 18,789.45-28,037.15-18,680.10

Finding the Fourth Proportional to 18,789.45, 28,037.15 and 18,680.10

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Solution

The fourth proportional to 18,789.45, 28,037.15 and 18,680.10 is: 27,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.45 : 28,037.15 = 18,680.10 : x
  2. Step 2: Convert to fraction form
    18,789.45/28,037.15 = 18,680.10/x
  3. Step 3: Cross multiply
    18,789.45x = 28,037.15 × 18,680.10
  4. Step 4: Simplify right side
    18,789.45x = 523,736,672.31
  5. Step 5: Solve for x
    x = 523,736,672.31/18,789.45
  6. Step 6: Final answer
    x = 27,873.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.