Home / 21,011.58-31,517.73-6,220.47

Finding the Fourth Proportional to 21,011.58, 31,517.73 and 6,220.47

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Solution

The fourth proportional to 21,011.58, 31,517.73 and 6,220.47 is: 9,330.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.58 : 31,517.73 = 6,220.47 : x
  2. Step 2: Convert to fraction form
    21,011.58/31,517.73 = 6,220.47/x
  3. Step 3: Cross multiply
    21,011.58x = 31,517.73 × 6,220.47
  4. Step 4: Simplify right side
    21,011.58x = 196,055,093.93
  5. Step 5: Solve for x
    x = 196,055,093.93/21,011.58
  6. Step 6: Final answer
    x = 9,330.81

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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.