Home / 21,993.08-30,350.55-21,198.47

Finding the Fourth Proportional to 21,993.08, 30,350.55 and 21,198.47

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Solution

The fourth proportional to 21,993.08, 30,350.55 and 21,198.47 is: 29,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.08 : 30,350.55 = 21,198.47 : x
  2. Step 2: Convert to fraction form
    21,993.08/30,350.55 = 21,198.47/x
  3. Step 3: Cross multiply
    21,993.08x = 30,350.55 × 21,198.47
  4. Step 4: Simplify right side
    21,993.08x = 643,385,071.91
  5. Step 5: Solve for x
    x = 643,385,071.91/21,993.08
  6. Step 6: Final answer
    x = 29,253.98

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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.