Home / 18,538.16-25,571.96-12,862.72

Finding the Fourth Proportional to 18,538.16, 25,571.96 and 12,862.72

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Solution

The fourth proportional to 18,538.16, 25,571.96 and 12,862.72 is: 17,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.16 : 25,571.96 = 12,862.72 : x
  2. Step 2: Convert to fraction form
    18,538.16/25,571.96 = 12,862.72/x
  3. Step 3: Cross multiply
    18,538.16x = 25,571.96 × 12,862.72
  4. Step 4: Simplify right side
    18,538.16x = 328,924,961.33
  5. Step 5: Solve for x
    x = 328,924,961.33/18,538.16
  6. Step 6: Final answer
    x = 17,743.13

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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.