Home / 31,341.80-43,243.06-20,170.28

Finding the Fourth Proportional to 31,341.80, 43,243.06 and 20,170.28

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Solution

The fourth proportional to 31,341.80, 43,243.06 and 20,170.28 is: 27,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,341.80 : 43,243.06 = 20,170.28 : x
  2. Step 2: Convert to fraction form
    31,341.80/43,243.06 = 20,170.28/x
  3. Step 3: Cross multiply
    31,341.80x = 43,243.06 × 20,170.28
  4. Step 4: Simplify right side
    31,341.80x = 872,224,628.26
  5. Step 5: Solve for x
    x = 872,224,628.26/31,341.80
  6. Step 6: Final answer
    x = 27,829.44

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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.