Home / 10,940.72-15,071.84-8,701.92

Finding the Fourth Proportional to 10,940.72, 15,071.84 and 8,701.92

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Solution

The fourth proportional to 10,940.72, 15,071.84 and 8,701.92 is: 11,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.72 : 15,071.84 = 8,701.92 : x
  2. Step 2: Convert to fraction form
    10,940.72/15,071.84 = 8,701.92/x
  3. Step 3: Cross multiply
    10,940.72x = 15,071.84 × 8,701.92
  4. Step 4: Simplify right side
    10,940.72x = 131,153,945.93
  5. Step 5: Solve for x
    x = 131,153,945.93/10,940.72
  6. Step 6: Final answer
    x = 11,987.69

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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.