Home / 31,838.25-43,924.54-20,506.86

Finding the Fourth Proportional to 31,838.25, 43,924.54 and 20,506.86

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Solution

The fourth proportional to 31,838.25, 43,924.54 and 20,506.86 is: 28,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.25 : 43,924.54 = 20,506.86 : x
  2. Step 2: Convert to fraction form
    31,838.25/43,924.54 = 20,506.86/x
  3. Step 3: Cross multiply
    31,838.25x = 43,924.54 × 20,506.86
  4. Step 4: Simplify right side
    31,838.25x = 900,754,392.34
  5. Step 5: Solve for x
    x = 900,754,392.34/31,838.25
  6. Step 6: Final answer
    x = 28,291.58

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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.