Home / 28,231.98-42,339.30-19,522.86

Finding the Fourth Proportional to 28,231.98, 42,339.30 and 19,522.86

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Solution

The fourth proportional to 28,231.98, 42,339.30 and 19,522.86 is: 29,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.98 : 42,339.30 = 19,522.86 : x
  2. Step 2: Convert to fraction form
    28,231.98/42,339.30 = 19,522.86/x
  3. Step 3: Cross multiply
    28,231.98x = 42,339.30 × 19,522.86
  4. Step 4: Simplify right side
    28,231.98x = 826,584,226.40
  5. Step 5: Solve for x
    x = 826,584,226.40/28,231.98
  6. Step 6: Final answer
    x = 29,278.29

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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.