Home / 31,384.09-43,291.96-18,801.55

Finding the Fourth Proportional to 31,384.09, 43,291.96 and 18,801.55

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Solution

The fourth proportional to 31,384.09, 43,291.96 and 18,801.55 is: 25,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,384.09 : 43,291.96 = 18,801.55 : x
  2. Step 2: Convert to fraction form
    31,384.09/43,291.96 = 18,801.55/x
  3. Step 3: Cross multiply
    31,384.09x = 43,291.96 × 18,801.55
  4. Step 4: Simplify right side
    31,384.09x = 813,955,950.54
  5. Step 5: Solve for x
    x = 813,955,950.54/31,384.09
  6. Step 6: Final answer
    x = 25,935.31

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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.