Home / 13,956.91-19,255.05-7,985.39

Finding the Fourth Proportional to 13,956.91, 19,255.05 and 7,985.39

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Solution

The fourth proportional to 13,956.91, 19,255.05 and 7,985.39 is: 11,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.91 : 19,255.05 = 7,985.39 : x
  2. Step 2: Convert to fraction form
    13,956.91/19,255.05 = 7,985.39/x
  3. Step 3: Cross multiply
    13,956.91x = 19,255.05 × 7,985.39
  4. Step 4: Simplify right side
    13,956.91x = 153,758,987.44
  5. Step 5: Solve for x
    x = 153,758,987.44/13,956.91
  6. Step 6: Final answer
    x = 11,016.69

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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.