Home / 31,780.94-43,864.08-18,354.38

Finding the Fourth Proportional to 31,780.94, 43,864.08 and 18,354.38

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Solution

The fourth proportional to 31,780.94, 43,864.08 and 18,354.38 is: 25,332.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.94 : 43,864.08 = 18,354.38 : x
  2. Step 2: Convert to fraction form
    31,780.94/43,864.08 = 18,354.38/x
  3. Step 3: Cross multiply
    31,780.94x = 43,864.08 × 18,354.38
  4. Step 4: Simplify right side
    31,780.94x = 805,097,992.67
  5. Step 5: Solve for x
    x = 805,097,992.67/31,780.94
  6. Step 6: Final answer
    x = 25,332.73

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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.