Home / 31,404.21-43,306.95-28,811.13

Finding the Fourth Proportional to 31,404.21, 43,306.95 and 28,811.13

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Solution

The fourth proportional to 31,404.21, 43,306.95 and 28,811.13 is: 39,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,404.21 : 43,306.95 = 28,811.13 : x
  2. Step 2: Convert to fraction form
    31,404.21/43,306.95 = 28,811.13/x
  3. Step 3: Cross multiply
    31,404.21x = 43,306.95 × 28,811.13
  4. Step 4: Simplify right side
    31,404.21x = 1,247,722,166.35
  5. Step 5: Solve for x
    x = 1,247,722,166.35/31,404.21
  6. Step 6: Final answer
    x = 39,731.05

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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.