Home / 20,656.50-30,958.83-10,664.34

Finding the Fourth Proportional to 20,656.50, 30,958.83 and 10,664.34

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Solution

The fourth proportional to 20,656.50, 30,958.83 and 10,664.34 is: 15,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.50 : 30,958.83 = 10,664.34 : x
  2. Step 2: Convert to fraction form
    20,656.50/30,958.83 = 10,664.34/x
  3. Step 3: Cross multiply
    20,656.50x = 30,958.83 × 10,664.34
  4. Step 4: Simplify right side
    20,656.50x = 330,155,489.12
  5. Step 5: Solve for x
    x = 330,155,489.12/20,656.50
  6. Step 6: Final answer
    x = 15,983.13

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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.