Home / 20,102.40-30,156.57-6,951.24

Finding the Fourth Proportional to 20,102.40, 30,156.57 and 6,951.24

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Solution

The fourth proportional to 20,102.40, 30,156.57 and 6,951.24 is: 10,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.40 : 30,156.57 = 6,951.24 : x
  2. Step 2: Convert to fraction form
    20,102.40/30,156.57 = 6,951.24/x
  3. Step 3: Cross multiply
    20,102.40x = 30,156.57 × 6,951.24
  4. Step 4: Simplify right side
    20,102.40x = 209,625,555.65
  5. Step 5: Solve for x
    x = 209,625,555.65/20,102.40
  6. Step 6: Final answer
    x = 10,427.89

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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.