Home / 13,132.47-18,122.48-7,164.25

Finding the Fourth Proportional to 13,132.47, 18,122.48 and 7,164.25

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Solution

The fourth proportional to 13,132.47, 18,122.48 and 7,164.25 is: 9,886.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.47 : 18,122.48 = 7,164.25 : x
  2. Step 2: Convert to fraction form
    13,132.47/18,122.48 = 7,164.25/x
  3. Step 3: Cross multiply
    13,132.47x = 18,122.48 × 7,164.25
  4. Step 4: Simplify right side
    13,132.47x = 129,833,941.52
  5. Step 5: Solve for x
    x = 129,833,941.52/13,132.47
  6. Step 6: Final answer
    x = 9,886.49

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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.