Home / 20,753.32-28,630.32-12,792.64

Finding the Fourth Proportional to 20,753.32, 28,630.32 and 12,792.64

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Solution

The fourth proportional to 20,753.32, 28,630.32 and 12,792.64 is: 17,648.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.32 : 28,630.32 = 12,792.64 : x
  2. Step 2: Convert to fraction form
    20,753.32/28,630.32 = 12,792.64/x
  3. Step 3: Cross multiply
    20,753.32x = 28,630.32 × 12,792.64
  4. Step 4: Simplify right side
    20,753.32x = 366,257,376.84
  5. Step 5: Solve for x
    x = 366,257,376.84/20,753.32
  6. Step 6: Final answer
    x = 17,648.13

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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.