Home / 20,171.70-30,232.35-10,314.90

Finding the Fourth Proportional to 20,171.70, 30,232.35 and 10,314.90

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Solution

The fourth proportional to 20,171.70, 30,232.35 and 10,314.90 is: 15,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.70 : 30,232.35 = 10,314.90 : x
  2. Step 2: Convert to fraction form
    20,171.70/30,232.35 = 10,314.90/x
  3. Step 3: Cross multiply
    20,171.70x = 30,232.35 × 10,314.90
  4. Step 4: Simplify right side
    20,171.70x = 311,843,667.02
  5. Step 5: Solve for x
    x = 311,843,667.02/20,171.70
  6. Step 6: Final answer
    x = 15,459.46

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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.