Home / 20,064.52-27,685.12-11,111.60

Finding the Fourth Proportional to 20,064.52, 27,685.12 and 11,111.60

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Solution

The fourth proportional to 20,064.52, 27,685.12 and 11,111.60 is: 15,331.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.52 : 27,685.12 = 11,111.60 : x
  2. Step 2: Convert to fraction form
    20,064.52/27,685.12 = 11,111.60/x
  3. Step 3: Cross multiply
    20,064.52x = 27,685.12 × 11,111.60
  4. Step 4: Simplify right side
    20,064.52x = 307,625,979.39
  5. Step 5: Solve for x
    x = 307,625,979.39/20,064.52
  6. Step 6: Final answer
    x = 15,331.84

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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.