Home / 28,112.91-42,199.38-12,110.38

Finding the Fourth Proportional to 28,112.91, 42,199.38 and 12,110.38

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Solution

The fourth proportional to 28,112.91, 42,199.38 and 12,110.38 is: 18,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.91 : 42,199.38 = 12,110.38 : x
  2. Step 2: Convert to fraction form
    28,112.91/42,199.38 = 12,110.38/x
  3. Step 3: Cross multiply
    28,112.91x = 42,199.38 × 12,110.38
  4. Step 4: Simplify right side
    28,112.91x = 511,050,422.07
  5. Step 5: Solve for x
    x = 511,050,422.07/28,112.91
  6. Step 6: Final answer
    x = 18,178.50

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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.