Home / 20,883.74-31,333.80-9,188.76

Finding the Fourth Proportional to 20,883.74, 31,333.80 and 9,188.76

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Solution

The fourth proportional to 20,883.74, 31,333.80 and 9,188.76 is: 13,786.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.74 : 31,333.80 = 9,188.76 : x
  2. Step 2: Convert to fraction form
    20,883.74/31,333.80 = 9,188.76/x
  3. Step 3: Cross multiply
    20,883.74x = 31,333.80 × 9,188.76
  4. Step 4: Simplify right side
    20,883.74x = 287,918,768.09
  5. Step 5: Solve for x
    x = 287,918,768.09/20,883.74
  6. Step 6: Final answer
    x = 13,786.74

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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.