Home / 10,479.28-15,724.32-4,639.72

Finding the Fourth Proportional to 10,479.28, 15,724.32 and 4,639.72

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Solution

The fourth proportional to 10,479.28, 15,724.32 and 4,639.72 is: 6,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.28 : 15,724.32 = 4,639.72 : x
  2. Step 2: Convert to fraction form
    10,479.28/15,724.32 = 4,639.72/x
  3. Step 3: Cross multiply
    10,479.28x = 15,724.32 × 4,639.72
  4. Step 4: Simplify right side
    10,479.28x = 72,956,441.99
  5. Step 5: Solve for x
    x = 72,956,441.99/10,479.28
  6. Step 6: Final answer
    x = 6,961.97

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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.