Home / 11,131.04-15,334.97-7,724.76

Finding the Fourth Proportional to 11,131.04, 15,334.97 and 7,724.76

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Solution

The fourth proportional to 11,131.04, 15,334.97 and 7,724.76 is: 10,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.04 : 15,334.97 = 7,724.76 : x
  2. Step 2: Convert to fraction form
    11,131.04/15,334.97 = 7,724.76/x
  3. Step 3: Cross multiply
    11,131.04x = 15,334.97 × 7,724.76
  4. Step 4: Simplify right side
    11,131.04x = 118,458,924.23
  5. Step 5: Solve for x
    x = 118,458,924.23/11,131.04
  6. Step 6: Final answer
    x = 10,642.22

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Half scale
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Double scale
Find fourth proportional to 11,132.04, 15,336.34 and 7,725.76
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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.