Home / 20,117.76-30,149.29-7,631.07

Finding the Fourth Proportional to 20,117.76, 30,149.29 and 7,631.07

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Solution

The fourth proportional to 20,117.76, 30,149.29 and 7,631.07 is: 11,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.76 : 30,149.29 = 7,631.07 : x
  2. Step 2: Convert to fraction form
    20,117.76/30,149.29 = 7,631.07/x
  3. Step 3: Cross multiply
    20,117.76x = 30,149.29 × 7,631.07
  4. Step 4: Simplify right side
    20,117.76x = 230,071,342.44
  5. Step 5: Solve for x
    x = 230,071,342.44/20,117.76
  6. Step 6: Final answer
    x = 11,436.23

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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.