Home / 11,055.69-15,245.39-8,538.21

Finding the Fourth Proportional to 11,055.69, 15,245.39 and 8,538.21

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Solution

The fourth proportional to 11,055.69, 15,245.39 and 8,538.21 is: 11,773.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,055.69 : 15,245.39 = 8,538.21 : x
  2. Step 2: Convert to fraction form
    11,055.69/15,245.39 = 8,538.21/x
  3. Step 3: Cross multiply
    11,055.69x = 15,245.39 × 8,538.21
  4. Step 4: Simplify right side
    11,055.69x = 130,168,362.70
  5. Step 5: Solve for x
    x = 130,168,362.70/11,055.69
  6. Step 6: Final answer
    x = 11,773.88

Related Problems

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Half scale
Find fourth proportional to 22,111.38, 30,490.79 and 17,076.42
Double scale
Find fourth proportional to 11,056.69, 15,246.77 and 8,539.21
Similar ratio
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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.