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Finding the Fourth Proportional to 30,230.64, 45,360.78 and 13,602.42

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Solution

The fourth proportional to 30,230.64, 45,360.78 and 13,602.42 is: 20,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,230.64 : 45,360.78 = 13,602.42 : x
  2. Step 2: Convert to fraction form
    30,230.64/45,360.78 = 13,602.42/x
  3. Step 3: Cross multiply
    30,230.64x = 45,360.78 × 13,602.42
  4. Step 4: Simplify right side
    30,230.64x = 617,016,381.09
  5. Step 5: Solve for x
    x = 617,016,381.09/30,230.64
  6. Step 6: Final answer
    x = 20,410.30

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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.