Home / 15,613.39-21,546.99-8,539.81

Finding the Fourth Proportional to 15,613.39, 21,546.99 and 8,539.81

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Solution

The fourth proportional to 15,613.39, 21,546.99 and 8,539.81 is: 11,785.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.39 : 21,546.99 = 8,539.81 : x
  2. Step 2: Convert to fraction form
    15,613.39/21,546.99 = 8,539.81/x
  3. Step 3: Cross multiply
    15,613.39x = 21,546.99 × 8,539.81
  4. Step 4: Simplify right side
    15,613.39x = 184,007,268.01
  5. Step 5: Solve for x
    x = 184,007,268.01/15,613.39
  6. Step 6: Final answer
    x = 11,785.22

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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.