Home / 20,154.21-30,236.78-7,007.60

Finding the Fourth Proportional to 20,154.21, 30,236.78 and 7,007.60

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Solution

The fourth proportional to 20,154.21, 30,236.78 and 7,007.60 is: 10,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.21 : 30,236.78 = 7,007.60 : x
  2. Step 2: Convert to fraction form
    20,154.21/30,236.78 = 7,007.60/x
  3. Step 3: Cross multiply
    20,154.21x = 30,236.78 × 7,007.60
  4. Step 4: Simplify right side
    20,154.21x = 211,887,259.53
  5. Step 5: Solve for x
    x = 211,887,259.53/20,154.21
  6. Step 6: Final answer
    x = 10,513.30

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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.