Home / 13,195.52-18,209.36-7,889.12

Finding the Fourth Proportional to 13,195.52, 18,209.36 and 7,889.12

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Solution

The fourth proportional to 13,195.52, 18,209.36 and 7,889.12 is: 10,886.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.52 : 18,209.36 = 7,889.12 : x
  2. Step 2: Convert to fraction form
    13,195.52/18,209.36 = 7,889.12/x
  3. Step 3: Cross multiply
    13,195.52x = 18,209.36 × 7,889.12
  4. Step 4: Simplify right side
    13,195.52x = 143,655,826.16
  5. Step 5: Solve for x
    x = 143,655,826.16/13,195.52
  6. Step 6: Final answer
    x = 10,886.71

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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.