Home / 20,414.76-30,621.87-9,885.72

Finding the Fourth Proportional to 20,414.76, 30,621.87 and 9,885.72

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Solution

The fourth proportional to 20,414.76, 30,621.87 and 9,885.72 is: 14,828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.76 : 30,621.87 = 9,885.72 : x
  2. Step 2: Convert to fraction form
    20,414.76/30,621.87 = 9,885.72/x
  3. Step 3: Cross multiply
    20,414.76x = 30,621.87 × 9,885.72
  4. Step 4: Simplify right side
    20,414.76x = 302,719,232.70
  5. Step 5: Solve for x
    x = 302,719,232.70/20,414.76
  6. Step 6: Final answer
    x = 14,828.45

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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.