Home / 13,987.64-19,286.76-11,152.80

Finding the Fourth Proportional to 13,987.64, 19,286.76 and 11,152.80

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Solution

The fourth proportional to 13,987.64, 19,286.76 and 11,152.80 is: 15,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.64 : 19,286.76 = 11,152.80 : x
  2. Step 2: Convert to fraction form
    13,987.64/19,286.76 = 11,152.80/x
  3. Step 3: Cross multiply
    13,987.64x = 19,286.76 × 11,152.80
  4. Step 4: Simplify right side
    13,987.64x = 215,101,376.93
  5. Step 5: Solve for x
    x = 215,101,376.93/13,987.64
  6. Step 6: Final answer
    x = 15,377.96

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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.