Home / 20,839.91-28,772.49-18,597.93

Finding the Fourth Proportional to 20,839.91, 28,772.49 and 18,597.93

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Solution

The fourth proportional to 20,839.91, 28,772.49 and 18,597.93 is: 25,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.91 : 28,772.49 = 18,597.93 : x
  2. Step 2: Convert to fraction form
    20,839.91/28,772.49 = 18,597.93/x
  3. Step 3: Cross multiply
    20,839.91x = 28,772.49 × 18,597.93
  4. Step 4: Simplify right side
    20,839.91x = 535,108,754.95
  5. Step 5: Solve for x
    x = 535,108,754.95/20,839.91
  6. Step 6: Final answer
    x = 25,677.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.