Home / 31,991.17-44,138.95-20,661.14

Finding the Fourth Proportional to 31,991.17, 44,138.95 and 20,661.14

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Solution

The fourth proportional to 31,991.17, 44,138.95 and 20,661.14 is: 28,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,991.17 : 44,138.95 = 20,661.14 : x
  2. Step 2: Convert to fraction form
    31,991.17/44,138.95 = 20,661.14/x
  3. Step 3: Cross multiply
    31,991.17x = 44,138.95 × 20,661.14
  4. Step 4: Simplify right side
    31,991.17x = 911,960,922.10
  5. Step 5: Solve for x
    x = 911,960,922.10/31,991.17
  6. Step 6: Final answer
    x = 28,506.65

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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.