Home / 20,621.76-30,948.19-15,089.38

Finding the Fourth Proportional to 20,621.76, 30,948.19 and 15,089.38

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Solution

The fourth proportional to 20,621.76, 30,948.19 and 15,089.38 is: 22,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.76 : 30,948.19 = 15,089.38 : x
  2. Step 2: Convert to fraction form
    20,621.76/30,948.19 = 15,089.38/x
  3. Step 3: Cross multiply
    20,621.76x = 30,948.19 × 15,089.38
  4. Step 4: Simplify right side
    20,621.76x = 466,988,999.22
  5. Step 5: Solve for x
    x = 466,988,999.22/20,621.76
  6. Step 6: Final answer
    x = 22,645.45

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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.