Home / 20,736.32-31,104.47-5,153.95

Finding the Fourth Proportional to 20,736.32, 31,104.47 and 5,153.95

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Solution

The fourth proportional to 20,736.32, 31,104.47 and 5,153.95 is: 7,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.32 : 31,104.47 = 5,153.95 : x
  2. Step 2: Convert to fraction form
    20,736.32/31,104.47 = 5,153.95/x
  3. Step 3: Cross multiply
    20,736.32x = 31,104.47 × 5,153.95
  4. Step 4: Simplify right side
    20,736.32x = 160,310,759.96
  5. Step 5: Solve for x
    x = 160,310,759.96/20,736.32
  6. Step 6: Final answer
    x = 7,730.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.