Home / 31,338.57-43,243.71-18,587.16

Finding the Fourth Proportional to 31,338.57, 43,243.71 and 18,587.16

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Solution

The fourth proportional to 31,338.57, 43,243.71 and 18,587.16 is: 25,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.57 : 43,243.71 = 18,587.16 : x
  2. Step 2: Convert to fraction form
    31,338.57/43,243.71 = 18,587.16/x
  3. Step 3: Cross multiply
    31,338.57x = 43,243.71 × 18,587.16
  4. Step 4: Simplify right side
    31,338.57x = 803,777,756.76
  5. Step 5: Solve for x
    x = 803,777,756.76/31,338.57
  6. Step 6: Final answer
    x = 25,648.20

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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.