Home / 13,134.99-18,126.13-7,166.53

Finding the Fourth Proportional to 13,134.99, 18,126.13 and 7,166.53

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Solution

The fourth proportional to 13,134.99, 18,126.13 and 7,166.53 is: 9,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.99 : 18,126.13 = 7,166.53 : x
  2. Step 2: Convert to fraction form
    13,134.99/18,126.13 = 7,166.53/x
  3. Step 3: Cross multiply
    13,134.99x = 18,126.13 × 7,166.53
  4. Step 4: Simplify right side
    13,134.99x = 129,901,370.65
  5. Step 5: Solve for x
    x = 129,901,370.65/13,134.99
  6. Step 6: Final answer
    x = 9,889.72

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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.