Home / 11,272.88-15,559.08-7,086.80

Finding the Fourth Proportional to 11,272.88, 15,559.08 and 7,086.80

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Solution

The fourth proportional to 11,272.88, 15,559.08 and 7,086.80 is: 9,781.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.88 : 15,559.08 = 7,086.80 : x
  2. Step 2: Convert to fraction form
    11,272.88/15,559.08 = 7,086.80/x
  3. Step 3: Cross multiply
    11,272.88x = 15,559.08 × 7,086.80
  4. Step 4: Simplify right side
    11,272.88x = 110,264,088.14
  5. Step 5: Solve for x
    x = 110,264,088.14/11,272.88
  6. Step 6: Final answer
    x = 9,781.36

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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.