Home / 20,105.12-30,159.74-6,957.47

Finding the Fourth Proportional to 20,105.12, 30,159.74 and 6,957.47

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Solution

The fourth proportional to 20,105.12, 30,159.74 and 6,957.47 is: 10,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.12 : 30,159.74 = 6,957.47 : x
  2. Step 2: Convert to fraction form
    20,105.12/30,159.74 = 6,957.47/x
  3. Step 3: Cross multiply
    20,105.12x = 30,159.74 × 6,957.47
  4. Step 4: Simplify right side
    20,105.12x = 209,835,352.85
  5. Step 5: Solve for x
    x = 209,835,352.85/20,105.12
  6. Step 6: Final answer
    x = 10,436.91

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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.