Home / 20,727.20-31,097.04-12,416.48

Finding the Fourth Proportional to 20,727.20, 31,097.04 and 12,416.48

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Solution

The fourth proportional to 20,727.20, 31,097.04 and 12,416.48 is: 18,628.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.20 : 31,097.04 = 12,416.48 : x
  2. Step 2: Convert to fraction form
    20,727.20/31,097.04 = 12,416.48/x
  3. Step 3: Cross multiply
    20,727.20x = 31,097.04 × 12,416.48
  4. Step 4: Simplify right side
    20,727.20x = 386,115,775.22
  5. Step 5: Solve for x
    x = 386,115,775.22/20,727.20
  6. Step 6: Final answer
    x = 18,628.46

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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.