Home / 28,250.34-42,385.24-12,678.90

Finding the Fourth Proportional to 28,250.34, 42,385.24 and 12,678.90

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Solution

The fourth proportional to 28,250.34, 42,385.24 and 12,678.90 is: 19,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.34 : 42,385.24 = 12,678.90 : x
  2. Step 2: Convert to fraction form
    28,250.34/42,385.24 = 12,678.90/x
  3. Step 3: Cross multiply
    28,250.34x = 42,385.24 × 12,678.90
  4. Step 4: Simplify right side
    28,250.34x = 537,398,219.44
  5. Step 5: Solve for x
    x = 537,398,219.44/28,250.34
  6. Step 6: Final answer
    x = 19,022.72

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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.