Home / 21,049.61-31,574.39-10,661.36

Finding the Fourth Proportional to 21,049.61, 31,574.39 and 10,661.36

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Solution

The fourth proportional to 21,049.61, 31,574.39 and 10,661.36 is: 15,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.61 : 31,574.39 = 10,661.36 : x
  2. Step 2: Convert to fraction form
    21,049.61/31,574.39 = 10,661.36/x
  3. Step 3: Cross multiply
    21,049.61x = 31,574.39 × 10,661.36
  4. Step 4: Simplify right side
    21,049.61x = 336,625,727.39
  5. Step 5: Solve for x
    x = 336,625,727.39/21,049.61
  6. Step 6: Final answer
    x = 15,992.02

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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.