Home / 31,685.94-43,731.09-20,045.16

Finding the Fourth Proportional to 31,685.94, 43,731.09 and 20,045.16

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Solution

The fourth proportional to 31,685.94, 43,731.09 and 20,045.16 is: 27,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.94 : 43,731.09 = 20,045.16 : x
  2. Step 2: Convert to fraction form
    31,685.94/43,731.09 = 20,045.16/x
  3. Step 3: Cross multiply
    31,685.94x = 43,731.09 × 20,045.16
  4. Step 4: Simplify right side
    31,685.94x = 876,596,696.02
  5. Step 5: Solve for x
    x = 876,596,696.02/31,685.94
  6. Step 6: Final answer
    x = 27,665.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.