Home / 14,251.28-21,378.08-4,390.56

Finding the Fourth Proportional to 14,251.28, 21,378.08 and 4,390.56

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Solution

The fourth proportional to 14,251.28, 21,378.08 and 4,390.56 is: 6,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,251.28 : 21,378.08 = 4,390.56 : x
  2. Step 2: Convert to fraction form
    14,251.28/21,378.08 = 4,390.56/x
  3. Step 3: Cross multiply
    14,251.28x = 21,378.08 × 4,390.56
  4. Step 4: Simplify right side
    14,251.28x = 93,861,742.92
  5. Step 5: Solve for x
    x = 93,861,742.92/14,251.28
  6. Step 6: Final answer
    x = 6,586.20

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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.