Home / 31,589.52-43,579.80-20,238.72

Finding the Fourth Proportional to 31,589.52, 43,579.80 and 20,238.72

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Solution

The fourth proportional to 31,589.52, 43,579.80 and 20,238.72 is: 27,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,589.52 : 43,579.80 = 20,238.72 : x
  2. Step 2: Convert to fraction form
    31,589.52/43,579.80 = 20,238.72/x
  3. Step 3: Cross multiply
    31,589.52x = 43,579.80 × 20,238.72
  4. Step 4: Simplify right side
    31,589.52x = 881,999,369.86
  5. Step 5: Solve for x
    x = 881,999,369.86/31,589.52
  6. Step 6: Final answer
    x = 27,920.63

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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.