Home / 13,134.68-18,125.88-7,166.28

Finding the Fourth Proportional to 13,134.68, 18,125.88 and 7,166.28

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Solution

The fourth proportional to 13,134.68, 18,125.88 and 7,166.28 is: 9,889.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.68 : 18,125.88 = 7,166.28 : x
  2. Step 2: Convert to fraction form
    13,134.68/18,125.88 = 7,166.28/x
  3. Step 3: Cross multiply
    13,134.68x = 18,125.88 × 7,166.28
  4. Step 4: Simplify right side
    13,134.68x = 129,895,131.33
  5. Step 5: Solve for x
    x = 129,895,131.33/13,134.68
  6. Step 6: Final answer
    x = 9,889.48

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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.