Home / 20,736.60-31,104.86-5,154.24

Finding the Fourth Proportional to 20,736.60, 31,104.86 and 5,154.24

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Solution

The fourth proportional to 20,736.60, 31,104.86 and 5,154.24 is: 7,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.60 : 31,104.86 = 5,154.24 : x
  2. Step 2: Convert to fraction form
    20,736.60/31,104.86 = 5,154.24/x
  3. Step 3: Cross multiply
    20,736.60x = 31,104.86 × 5,154.24
  4. Step 4: Simplify right side
    20,736.60x = 160,321,913.61
  5. Step 5: Solve for x
    x = 160,321,913.61/20,736.60
  6. Step 6: Final answer
    x = 7,731.35

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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.