Home / 31,761.65-43,836.59-18,330.64

Finding the Fourth Proportional to 31,761.65, 43,836.59 and 18,330.64

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Solution

The fourth proportional to 31,761.65, 43,836.59 and 18,330.64 is: 25,299.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,761.65 : 43,836.59 = 18,330.64 : x
  2. Step 2: Convert to fraction form
    31,761.65/43,836.59 = 18,330.64/x
  3. Step 3: Cross multiply
    31,761.65x = 43,836.59 × 18,330.64
  4. Step 4: Simplify right side
    31,761.65x = 803,552,439.28
  5. Step 5: Solve for x
    x = 803,552,439.28/31,761.65
  6. Step 6: Final answer
    x = 25,299.46

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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.