Home / 21,212.97-31,770.99-10,127.46

Finding the Fourth Proportional to 21,212.97, 31,770.99 and 10,127.46

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Solution

The fourth proportional to 21,212.97, 31,770.99 and 10,127.46 is: 15,168.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.97 : 31,770.99 = 10,127.46 : x
  2. Step 2: Convert to fraction form
    21,212.97/31,770.99 = 10,127.46/x
  3. Step 3: Cross multiply
    21,212.97x = 31,770.99 × 10,127.46
  4. Step 4: Simplify right side
    21,212.97x = 321,759,430.39
  5. Step 5: Solve for x
    x = 321,759,430.39/21,212.97
  6. Step 6: Final answer
    x = 15,168.05

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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.