Home / 15,085.11-20,743.62-13,092.20

Finding the Fourth Proportional to 15,085.11, 20,743.62 and 13,092.20

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Solution

The fourth proportional to 15,085.11, 20,743.62 and 13,092.20 is: 18,003.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.11 : 20,743.62 = 13,092.20 : x
  2. Step 2: Convert to fraction form
    15,085.11/20,743.62 = 13,092.20/x
  3. Step 3: Cross multiply
    15,085.11x = 20,743.62 × 13,092.20
  4. Step 4: Simplify right side
    15,085.11x = 271,579,621.76
  5. Step 5: Solve for x
    x = 271,579,621.76/15,085.11
  6. Step 6: Final answer
    x = 18,003.16

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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.