Home / 31,785.13-43,871.99-19,841.28

Finding the Fourth Proportional to 31,785.13, 43,871.99 and 19,841.28

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Solution

The fourth proportional to 31,785.13, 43,871.99 and 19,841.28 is: 27,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.13 : 43,871.99 = 19,841.28 : x
  2. Step 2: Convert to fraction form
    31,785.13/43,871.99 = 19,841.28/x
  3. Step 3: Cross multiply
    31,785.13x = 43,871.99 × 19,841.28
  4. Step 4: Simplify right side
    31,785.13x = 870,476,119.18
  5. Step 5: Solve for x
    x = 870,476,119.18/31,785.13
  6. Step 6: Final answer
    x = 27,386.27

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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.