Home / 20,063.85-27,687.35-10,989.08

Finding the Fourth Proportional to 20,063.85, 27,687.35 and 10,989.08

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Solution

The fourth proportional to 20,063.85, 27,687.35 and 10,989.08 is: 15,164.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.85 : 27,687.35 = 10,989.08 : x
  2. Step 2: Convert to fraction form
    20,063.85/27,687.35 = 10,989.08/x
  3. Step 3: Cross multiply
    20,063.85x = 27,687.35 × 10,989.08
  4. Step 4: Simplify right side
    20,063.85x = 304,258,310.76
  5. Step 5: Solve for x
    x = 304,258,310.76/20,063.85
  6. Step 6: Final answer
    x = 15,164.50

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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.