Home / 21,224.68-31,836.46-10,139.20

Finding the Fourth Proportional to 21,224.68, 31,836.46 and 10,139.20

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Solution

The fourth proportional to 21,224.68, 31,836.46 and 10,139.20 is: 15,208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.68 : 31,836.46 = 10,139.20 : x
  2. Step 2: Convert to fraction form
    21,224.68/31,836.46 = 10,139.20/x
  3. Step 3: Cross multiply
    21,224.68x = 31,836.46 × 10,139.20
  4. Step 4: Simplify right side
    21,224.68x = 322,796,235.23
  5. Step 5: Solve for x
    x = 322,796,235.23/21,224.68
  6. Step 6: Final answer
    x = 15,208.53

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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.