Home / 14,115.28-19,479.45-7,742.15

Finding the Fourth Proportional to 14,115.28, 19,479.45 and 7,742.15

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Solution

The fourth proportional to 14,115.28, 19,479.45 and 7,742.15 is: 10,684.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.28 : 19,479.45 = 7,742.15 : x
  2. Step 2: Convert to fraction form
    14,115.28/19,479.45 = 7,742.15/x
  3. Step 3: Cross multiply
    14,115.28x = 19,479.45 × 7,742.15
  4. Step 4: Simplify right side
    14,115.28x = 150,812,828.50
  5. Step 5: Solve for x
    x = 150,812,828.50/14,115.28
  6. Step 6: Final answer
    x = 10,684.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.