Home / 20,534.17-30,858.96-12,215.69

Finding the Fourth Proportional to 20,534.17, 30,858.96 and 12,215.69

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Solution

The fourth proportional to 20,534.17, 30,858.96 and 12,215.69 is: 18,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.17 : 30,858.96 = 12,215.69 : x
  2. Step 2: Convert to fraction form
    20,534.17/30,858.96 = 12,215.69/x
  3. Step 3: Cross multiply
    20,534.17x = 30,858.96 × 12,215.69
  4. Step 4: Simplify right side
    20,534.17x = 376,963,489.08
  5. Step 5: Solve for x
    x = 376,963,489.08/20,534.17
  6. Step 6: Final answer
    x = 18,357.87

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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.