Home / 20,116.50-27,761.25-11,284.50

Finding the Fourth Proportional to 20,116.50, 27,761.25 and 11,284.50

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Solution

The fourth proportional to 20,116.50, 27,761.25 and 11,284.50 is: 15,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.50 : 27,761.25 = 11,284.50 : x
  2. Step 2: Convert to fraction form
    20,116.50/27,761.25 = 11,284.50/x
  3. Step 3: Cross multiply
    20,116.50x = 27,761.25 × 11,284.50
  4. Step 4: Simplify right side
    20,116.50x = 313,271,825.63
  5. Step 5: Solve for x
    x = 313,271,825.63/20,116.50
  6. Step 6: Final answer
    x = 15,572.88

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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.