Home / 20,102.56-30,336.26-19,432.57

Finding the Fourth Proportional to 20,102.56, 30,336.26 and 19,432.57

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Solution

The fourth proportional to 20,102.56, 30,336.26 and 19,432.57 is: 29,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.56 : 30,336.26 = 19,432.57 : x
  2. Step 2: Convert to fraction form
    20,102.56/30,336.26 = 19,432.57/x
  3. Step 3: Cross multiply
    20,102.56x = 30,336.26 × 19,432.57
  4. Step 4: Simplify right side
    20,102.56x = 589,511,495.99
  5. Step 5: Solve for x
    x = 589,511,495.99/20,102.56
  6. Step 6: Final answer
    x = 29,325.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.