Home / 20,089.47-30,110.31-15,142.80

Finding the Fourth Proportional to 20,089.47, 30,110.31 and 15,142.80

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Solution

The fourth proportional to 20,089.47, 30,110.31 and 15,142.80 is: 22,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.47 : 30,110.31 = 15,142.80 : x
  2. Step 2: Convert to fraction form
    20,089.47/30,110.31 = 15,142.80/x
  3. Step 3: Cross multiply
    20,089.47x = 30,110.31 × 15,142.80
  4. Step 4: Simplify right side
    20,089.47x = 455,954,402.27
  5. Step 5: Solve for x
    x = 455,954,402.27/20,089.47
  6. Step 6: Final answer
    x = 22,696.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.