Home / 20,436.75-30,476.28-20,249.91

Finding the Fourth Proportional to 20,436.75, 30,476.28 and 20,249.91

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Solution

The fourth proportional to 20,436.75, 30,476.28 and 20,249.91 is: 30,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.75 : 30,476.28 = 20,249.91 : x
  2. Step 2: Convert to fraction form
    20,436.75/30,476.28 = 20,249.91/x
  3. Step 3: Cross multiply
    20,436.75x = 30,476.28 × 20,249.91
  4. Step 4: Simplify right side
    20,436.75x = 617,141,927.13
  5. Step 5: Solve for x
    x = 617,141,927.13/20,436.75
  6. Step 6: Final answer
    x = 30,197.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.