Home / 21,222.14-31,840.10-10,127.39

Finding the Fourth Proportional to 21,222.14, 31,840.10 and 10,127.39

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Solution

The fourth proportional to 21,222.14, 31,840.10 and 10,127.39 is: 15,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.14 : 31,840.10 = 10,127.39 : x
  2. Step 2: Convert to fraction form
    21,222.14/31,840.10 = 10,127.39/x
  3. Step 3: Cross multiply
    21,222.14x = 31,840.10 × 10,127.39
  4. Step 4: Simplify right side
    21,222.14x = 322,456,900.50
  5. Step 5: Solve for x
    x = 322,456,900.50/21,222.14
  6. Step 6: Final answer
    x = 15,194.37

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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.