Home / 13,132.36-18,122.26-7,164.12

Finding the Fourth Proportional to 13,132.36, 18,122.26 and 7,164.12

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Solution

The fourth proportional to 13,132.36, 18,122.26 and 7,164.12 is: 9,886.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.36 : 18,122.26 = 7,164.12 : x
  2. Step 2: Convert to fraction form
    13,132.36/18,122.26 = 7,164.12/x
  3. Step 3: Cross multiply
    13,132.36x = 18,122.26 × 7,164.12
  4. Step 4: Simplify right side
    13,132.36x = 129,830,045.31
  5. Step 5: Solve for x
    x = 129,830,045.31/13,132.36
  6. Step 6: Final answer
    x = 9,886.27

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Double scale
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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.