Home / 21,992.28-30,348.60-13,034.47

Finding the Fourth Proportional to 21,992.28, 30,348.60 and 13,034.47

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Solution

The fourth proportional to 21,992.28, 30,348.60 and 13,034.47 is: 17,987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.28 : 30,348.60 = 13,034.47 : x
  2. Step 2: Convert to fraction form
    21,992.28/30,348.60 = 13,034.47/x
  3. Step 3: Cross multiply
    21,992.28x = 30,348.60 × 13,034.47
  4. Step 4: Simplify right side
    21,992.28x = 395,577,916.24
  5. Step 5: Solve for x
    x = 395,577,916.24/21,992.28
  6. Step 6: Final answer
    x = 17,987.13

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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.