Home / 28,008.91-42,019.89-12,427.75

Finding the Fourth Proportional to 28,008.91, 42,019.89 and 12,427.75

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Solution

The fourth proportional to 28,008.91, 42,019.89 and 12,427.75 is: 18,644.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.91 : 42,019.89 = 12,427.75 : x
  2. Step 2: Convert to fraction form
    28,008.91/42,019.89 = 12,427.75/x
  3. Step 3: Cross multiply
    28,008.91x = 42,019.89 × 12,427.75
  4. Step 4: Simplify right side
    28,008.91x = 522,212,687.95
  5. Step 5: Solve for x
    x = 522,212,687.95/28,008.91
  6. Step 6: Final answer
    x = 18,644.52

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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.