Home / 20,889.14-31,258.85-18,087.63

Finding the Fourth Proportional to 20,889.14, 31,258.85 and 18,087.63

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Solution

The fourth proportional to 20,889.14, 31,258.85 and 18,087.63 is: 27,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.14 : 31,258.85 = 18,087.63 : x
  2. Step 2: Convert to fraction form
    20,889.14/31,258.85 = 18,087.63/x
  3. Step 3: Cross multiply
    20,889.14x = 31,258.85 × 18,087.63
  4. Step 4: Simplify right side
    20,889.14x = 565,398,422.59
  5. Step 5: Solve for x
    x = 565,398,422.59/20,889.14
  6. Step 6: Final answer
    x = 27,066.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.