Home / 20,093.31-30,138.08-13,561.47

Finding the Fourth Proportional to 20,093.31, 30,138.08 and 13,561.47

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Solution

The fourth proportional to 20,093.31, 30,138.08 and 13,561.47 is: 20,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,093.31 : 30,138.08 = 13,561.47 : x
  2. Step 2: Convert to fraction form
    20,093.31/30,138.08 = 13,561.47/x
  3. Step 3: Cross multiply
    20,093.31x = 30,138.08 × 13,561.47
  4. Step 4: Simplify right side
    20,093.31x = 408,716,599.97
  5. Step 5: Solve for x
    x = 408,716,599.97/20,093.31
  6. Step 6: Final answer
    x = 20,340.93

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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.