Home / 28,027.14-42,043.79-13,990.69

Finding the Fourth Proportional to 28,027.14, 42,043.79 and 13,990.69

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Solution

The fourth proportional to 28,027.14, 42,043.79 and 13,990.69 is: 20,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,027.14 : 42,043.79 = 13,990.69 : x
  2. Step 2: Convert to fraction form
    28,027.14/42,043.79 = 13,990.69/x
  3. Step 3: Cross multiply
    28,027.14x = 42,043.79 × 13,990.69
  4. Step 4: Simplify right side
    28,027.14x = 588,221,632.32
  5. Step 5: Solve for x
    x = 588,221,632.32/28,027.14
  6. Step 6: Final answer
    x = 20,987.57

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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.