Home / 18,218.60-25,132.76-15,696.33

Finding the Fourth Proportional to 18,218.60, 25,132.76 and 15,696.33

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Solution

The fourth proportional to 18,218.60, 25,132.76 and 15,696.33 is: 21,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.60 : 25,132.76 = 15,696.33 : x
  2. Step 2: Convert to fraction form
    18,218.60/25,132.76 = 15,696.33/x
  3. Step 3: Cross multiply
    18,218.60x = 25,132.76 × 15,696.33
  4. Step 4: Simplify right side
    18,218.60x = 394,492,094.77
  5. Step 5: Solve for x
    x = 394,492,094.77/18,218.60
  6. Step 6: Final answer
    x = 21,653.26

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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.