Home / 12,715.60-19,071.20-3,479.44

Finding the Fourth Proportional to 12,715.60, 19,071.20 and 3,479.44

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Solution

The fourth proportional to 12,715.60, 19,071.20 and 3,479.44 is: 5,218.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.60 : 19,071.20 = 3,479.44 : x
  2. Step 2: Convert to fraction form
    12,715.60/19,071.20 = 3,479.44/x
  3. Step 3: Cross multiply
    12,715.60x = 19,071.20 × 3,479.44
  4. Step 4: Simplify right side
    12,715.60x = 66,357,096.13
  5. Step 5: Solve for x
    x = 66,357,096.13/12,715.60
  6. Step 6: Final answer
    x = 5,218.56

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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.