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Finding the Fourth Proportional to 20,230.60, 30,345.90 and 13,232.20

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Solution

The fourth proportional to 20,230.60, 30,345.90 and 13,232.20 is: 19,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.60 : 30,345.90 = 13,232.20 : x
  2. Step 2: Convert to fraction form
    20,230.60/30,345.90 = 13,232.20/x
  3. Step 3: Cross multiply
    20,230.60x = 30,345.90 × 13,232.20
  4. Step 4: Simplify right side
    20,230.60x = 401,543,017.98
  5. Step 5: Solve for x
    x = 401,543,017.98/20,230.60
  6. Step 6: Final answer
    x = 19,848.30

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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.