Home / 13,086.96-18,055.56-7,421.08

Finding the Fourth Proportional to 13,086.96, 18,055.56 and 7,421.08

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Solution

The fourth proportional to 13,086.96, 18,055.56 and 7,421.08 is: 10,238.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.96 : 18,055.56 = 7,421.08 : x
  2. Step 2: Convert to fraction form
    13,086.96/18,055.56 = 7,421.08/x
  3. Step 3: Cross multiply
    13,086.96x = 18,055.56 × 7,421.08
  4. Step 4: Simplify right side
    13,086.96x = 133,991,755.20
  5. Step 5: Solve for x
    x = 133,991,755.20/13,086.96
  6. Step 6: Final answer
    x = 10,238.57

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Half scale
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Double scale
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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.