Home / 31,726.11-43,782.03-18,979.83

Finding the Fourth Proportional to 31,726.11, 43,782.03 and 18,979.83

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Solution

The fourth proportional to 31,726.11, 43,782.03 and 18,979.83 is: 26,192.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.11 : 43,782.03 = 18,979.83 : x
  2. Step 2: Convert to fraction form
    31,726.11/43,782.03 = 18,979.83/x
  3. Step 3: Cross multiply
    31,726.11x = 43,782.03 × 18,979.83
  4. Step 4: Simplify right side
    31,726.11x = 830,975,486.45
  5. Step 5: Solve for x
    x = 830,975,486.45/31,726.11
  6. Step 6: Final answer
    x = 26,192.16

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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.