Home / 31,845.32-43,934.28-20,513.93

Finding the Fourth Proportional to 31,845.32, 43,934.28 and 20,513.93

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Solution

The fourth proportional to 31,845.32, 43,934.28 and 20,513.93 is: 28,301.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.32 : 43,934.28 = 20,513.93 : x
  2. Step 2: Convert to fraction form
    31,845.32/43,934.28 = 20,513.93/x
  3. Step 3: Cross multiply
    31,845.32x = 43,934.28 × 20,513.93
  4. Step 4: Simplify right side
    31,845.32x = 901,264,524.85
  5. Step 5: Solve for x
    x = 901,264,524.85/31,845.32
  6. Step 6: Final answer
    x = 28,301.32

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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.