Home / 20,963.93-28,929.76-12,016.71

Finding the Fourth Proportional to 20,963.93, 28,929.76 and 12,016.71

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Solution

The fourth proportional to 20,963.93, 28,929.76 and 12,016.71 is: 16,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.93 : 28,929.76 = 12,016.71 : x
  2. Step 2: Convert to fraction form
    20,963.93/28,929.76 = 12,016.71/x
  3. Step 3: Cross multiply
    20,963.93x = 28,929.76 × 12,016.71
  4. Step 4: Simplify right side
    20,963.93x = 347,640,506.25
  5. Step 5: Solve for x
    x = 347,640,506.25/20,963.93
  6. Step 6: Final answer
    x = 16,582.79

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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.