Home / 11,579.15-15,987.58-7,108.97

Finding the Fourth Proportional to 11,579.15, 15,987.58 and 7,108.97

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Solution

The fourth proportional to 11,579.15, 15,987.58 and 7,108.97 is: 9,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.15 : 15,987.58 = 7,108.97 : x
  2. Step 2: Convert to fraction form
    11,579.15/15,987.58 = 7,108.97/x
  3. Step 3: Cross multiply
    11,579.15x = 15,987.58 × 7,108.97
  4. Step 4: Simplify right side
    11,579.15x = 113,655,128.88
  5. Step 5: Solve for x
    x = 113,655,128.88/11,579.15
  6. Step 6: Final answer
    x = 9,815.50

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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.