Home / 31,726.65-43,784.55-18,118.71

Finding the Fourth Proportional to 31,726.65, 43,784.55 and 18,118.71

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Solution

The fourth proportional to 31,726.65, 43,784.55 and 18,118.71 is: 25,004.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.65 : 43,784.55 = 18,118.71 : x
  2. Step 2: Convert to fraction form
    31,726.65/43,784.55 = 18,118.71/x
  3. Step 3: Cross multiply
    31,726.65x = 43,784.55 × 18,118.71
  4. Step 4: Simplify right side
    31,726.65x = 793,319,563.93
  5. Step 5: Solve for x
    x = 793,319,563.93/31,726.65
  6. Step 6: Final answer
    x = 25,004.83

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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.