Home / 10,071.20-15,107.61-3,407.64

Finding the Fourth Proportional to 10,071.20, 15,107.61 and 3,407.64

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Solution

The fourth proportional to 10,071.20, 15,107.61 and 3,407.64 is: 5,111.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,071.20 : 15,107.61 = 3,407.64 : x
  2. Step 2: Convert to fraction form
    10,071.20/15,107.61 = 3,407.64/x
  3. Step 3: Cross multiply
    10,071.20x = 15,107.61 × 3,407.64
  4. Step 4: Simplify right side
    10,071.20x = 51,481,252.27
  5. Step 5: Solve for x
    x = 51,481,252.27/10,071.20
  6. Step 6: Final answer
    x = 5,111.73

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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.