Home / 20,512.92-28,307.16-12,963.30

Finding the Fourth Proportional to 20,512.92, 28,307.16 and 12,963.30

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Solution

The fourth proportional to 20,512.92, 28,307.16 and 12,963.30 is: 17,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.92 : 28,307.16 = 12,963.30 : x
  2. Step 2: Convert to fraction form
    20,512.92/28,307.16 = 12,963.30/x
  3. Step 3: Cross multiply
    20,512.92x = 28,307.16 × 12,963.30
  4. Step 4: Simplify right side
    20,512.92x = 366,954,207.23
  5. Step 5: Solve for x
    x = 366,954,207.23/20,512.92
  6. Step 6: Final answer
    x = 17,888.93

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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.