Home / 20,963.72-28,930.02-11,532.68

Finding the Fourth Proportional to 20,963.72, 28,930.02 and 11,532.68

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Solution

The fourth proportional to 20,963.72, 28,930.02 and 11,532.68 is: 15,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.72 : 28,930.02 = 11,532.68 : x
  2. Step 2: Convert to fraction form
    20,963.72/28,930.02 = 11,532.68/x
  3. Step 3: Cross multiply
    20,963.72x = 28,930.02 × 11,532.68
  4. Step 4: Simplify right side
    20,963.72x = 333,640,663.05
  5. Step 5: Solve for x
    x = 333,640,663.05/20,963.72
  6. Step 6: Final answer
    x = 15,915.15

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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.