Home / 20,339.32-30,509.34-7,191.88

Finding the Fourth Proportional to 20,339.32, 30,509.34 and 7,191.88

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Solution

The fourth proportional to 20,339.32, 30,509.34 and 7,191.88 is: 10,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.32 : 30,509.34 = 7,191.88 : x
  2. Step 2: Convert to fraction form
    20,339.32/30,509.34 = 7,191.88/x
  3. Step 3: Cross multiply
    20,339.32x = 30,509.34 × 7,191.88
  4. Step 4: Simplify right side
    20,339.32x = 219,419,512.16
  5. Step 5: Solve for x
    x = 219,419,512.16/20,339.32
  6. Step 6: Final answer
    x = 10,787.95

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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.