Home / 18,856.31-28,288.11-7,168.62

Finding the Fourth Proportional to 18,856.31, 28,288.11 and 7,168.62

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Solution

The fourth proportional to 18,856.31, 28,288.11 and 7,168.62 is: 10,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.31 : 28,288.11 = 7,168.62 : x
  2. Step 2: Convert to fraction form
    18,856.31/28,288.11 = 7,168.62/x
  3. Step 3: Cross multiply
    18,856.31x = 28,288.11 × 7,168.62
  4. Step 4: Simplify right side
    18,856.31x = 202,786,711.11
  5. Step 5: Solve for x
    x = 202,786,711.11/18,856.31
  6. Step 6: Final answer
    x = 10,754.31

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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.