Home / 28,243.56-42,372.32-19,939.84

Finding the Fourth Proportional to 28,243.56, 42,372.32 and 19,939.84

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Solution

The fourth proportional to 28,243.56, 42,372.32 and 19,939.84 is: 29,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.56 : 42,372.32 = 19,939.84 : x
  2. Step 2: Convert to fraction form
    28,243.56/42,372.32 = 19,939.84/x
  3. Step 3: Cross multiply
    28,243.56x = 42,372.32 × 19,939.84
  4. Step 4: Simplify right side
    28,243.56x = 844,897,281.23
  5. Step 5: Solve for x
    x = 844,897,281.23/28,243.56
  6. Step 6: Final answer
    x = 29,914.69

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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.