Home / 20,426.36-30,631.64-7,944.75

Finding the Fourth Proportional to 20,426.36, 30,631.64 and 7,944.75

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Solution

The fourth proportional to 20,426.36, 30,631.64 and 7,944.75 is: 11,914.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.36 : 30,631.64 = 7,944.75 : x
  2. Step 2: Convert to fraction form
    20,426.36/30,631.64 = 7,944.75/x
  3. Step 3: Cross multiply
    20,426.36x = 30,631.64 × 7,944.75
  4. Step 4: Simplify right side
    20,426.36x = 243,360,682.17
  5. Step 5: Solve for x
    x = 243,360,682.17/20,426.36
  6. Step 6: Final answer
    x = 11,914.05

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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.