Home / 28,223.28-42,348.78-19,956.42

Finding the Fourth Proportional to 28,223.28, 42,348.78 and 19,956.42

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Solution

The fourth proportional to 28,223.28, 42,348.78 and 19,956.42 is: 29,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.28 : 42,348.78 = 19,956.42 : x
  2. Step 2: Convert to fraction form
    28,223.28/42,348.78 = 19,956.42/x
  3. Step 3: Cross multiply
    28,223.28x = 42,348.78 × 19,956.42
  4. Step 4: Simplify right side
    28,223.28x = 845,130,040.17
  5. Step 5: Solve for x
    x = 845,130,040.17/28,223.28
  6. Step 6: Final answer
    x = 29,944.43

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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.