Home / 20,267.40-27,966.30-11,313.60

Finding the Fourth Proportional to 20,267.40, 27,966.30 and 11,313.60

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Solution

The fourth proportional to 20,267.40, 27,966.30 and 11,313.60 is: 15,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.40 : 27,966.30 = 11,313.60 : x
  2. Step 2: Convert to fraction form
    20,267.40/27,966.30 = 11,313.60/x
  3. Step 3: Cross multiply
    20,267.40x = 27,966.30 × 11,313.60
  4. Step 4: Simplify right side
    20,267.40x = 316,399,531.68
  5. Step 5: Solve for x
    x = 316,399,531.68/20,267.40
  6. Step 6: Final answer
    x = 15,611.25

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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.