Home / 18,956.28-28,422.26-7,870.62

Finding the Fourth Proportional to 18,956.28, 28,422.26 and 7,870.62

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Solution

The fourth proportional to 18,956.28, 28,422.26 and 7,870.62 is: 11,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.28 : 28,422.26 = 7,870.62 : x
  2. Step 2: Convert to fraction form
    18,956.28/28,422.26 = 7,870.62/x
  3. Step 3: Cross multiply
    18,956.28x = 28,422.26 × 7,870.62
  4. Step 4: Simplify right side
    18,956.28x = 223,700,768.65
  5. Step 5: Solve for x
    x = 223,700,768.65/18,956.28
  6. Step 6: Final answer
    x = 11,800.88

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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.