Home / 31,140.12-42,973.37-22,203.19

Finding the Fourth Proportional to 31,140.12, 42,973.37 and 22,203.19

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Solution

The fourth proportional to 31,140.12, 42,973.37 and 22,203.19 is: 30,640.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.12 : 42,973.37 = 22,203.19 : x
  2. Step 2: Convert to fraction form
    31,140.12/42,973.37 = 22,203.19/x
  3. Step 3: Cross multiply
    31,140.12x = 42,973.37 × 22,203.19
  4. Step 4: Simplify right side
    31,140.12x = 954,145,899.05
  5. Step 5: Solve for x
    x = 954,145,899.05/31,140.12
  6. Step 6: Final answer
    x = 30,640.41

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Double scale
Find fourth proportional to 31,141.12, 42,974.75 and 22,204.19
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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.