Home / 20,479.75-30,719.63-5,688.66

Finding the Fourth Proportional to 20,479.75, 30,719.63 and 5,688.66

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Solution

The fourth proportional to 20,479.75, 30,719.63 and 5,688.66 is: 8,532.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.75 : 30,719.63 = 5,688.66 : x
  2. Step 2: Convert to fraction form
    20,479.75/30,719.63 = 5,688.66/x
  3. Step 3: Cross multiply
    20,479.75x = 30,719.63 × 5,688.66
  4. Step 4: Simplify right side
    20,479.75x = 174,753,544.62
  5. Step 5: Solve for x
    x = 174,753,544.62/20,479.75
  6. Step 6: Final answer
    x = 8,532.99

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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.