Home / 18,778.88-28,158.60-10,011.44

Finding the Fourth Proportional to 18,778.88, 28,158.60 and 10,011.44

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Solution

The fourth proportional to 18,778.88, 28,158.60 and 10,011.44 is: 15,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.88 : 28,158.60 = 10,011.44 : x
  2. Step 2: Convert to fraction form
    18,778.88/28,158.60 = 10,011.44/x
  3. Step 3: Cross multiply
    18,778.88x = 28,158.60 × 10,011.44
  4. Step 4: Simplify right side
    18,778.88x = 281,908,134.38
  5. Step 5: Solve for x
    x = 281,908,134.38/18,778.88
  6. Step 6: Final answer
    x = 15,011.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.