Home / 13,132.13-18,122.66-7,164.36

Finding the Fourth Proportional to 13,132.13, 18,122.66 and 7,164.36

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Solution

The fourth proportional to 13,132.13, 18,122.66 and 7,164.36 is: 9,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.13 : 18,122.66 = 7,164.36 : x
  2. Step 2: Convert to fraction form
    13,132.13/18,122.66 = 7,164.36/x
  3. Step 3: Cross multiply
    13,132.13x = 18,122.66 × 7,164.36
  4. Step 4: Simplify right side
    13,132.13x = 129,837,224.58
  5. Step 5: Solve for x
    x = 129,837,224.58/13,132.13
  6. Step 6: Final answer
    x = 9,886.99

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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.