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Finding the Fourth Proportional to 18,750.95, 28,117.74 and 6,901.73

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Solution

The fourth proportional to 18,750.95, 28,117.74 and 6,901.73 is: 10,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.95 : 28,117.74 = 6,901.73 : x
  2. Step 2: Convert to fraction form
    18,750.95/28,117.74 = 6,901.73/x
  3. Step 3: Cross multiply
    18,750.95x = 28,117.74 × 6,901.73
  4. Step 4: Simplify right side
    18,750.95x = 194,061,049.69
  5. Step 5: Solve for x
    x = 194,061,049.69/18,750.95
  6. Step 6: Final answer
    x = 10,349.40

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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.