Home / 13,867.39-19,138.98-7,899.61

Finding the Fourth Proportional to 13,867.39, 19,138.98 and 7,899.61

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Solution

The fourth proportional to 13,867.39, 19,138.98 and 7,899.61 is: 10,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.39 : 19,138.98 = 7,899.61 : x
  2. Step 2: Convert to fraction form
    13,867.39/19,138.98 = 7,899.61/x
  3. Step 3: Cross multiply
    13,867.39x = 19,138.98 × 7,899.61
  4. Step 4: Simplify right side
    13,867.39x = 151,190,477.80
  5. Step 5: Solve for x
    x = 151,190,477.80/13,867.39
  6. Step 6: Final answer
    x = 10,902.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.