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Finding the Fourth Proportional to 16,906.40, 25,381.20 and 9,015.20

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Solution

The fourth proportional to 16,906.40, 25,381.20 and 9,015.20 is: 13,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,906.40 : 25,381.20 = 9,015.20 : x
  2. Step 2: Convert to fraction form
    16,906.40/25,381.20 = 9,015.20/x
  3. Step 3: Cross multiply
    16,906.40x = 25,381.20 × 9,015.20
  4. Step 4: Simplify right side
    16,906.40x = 228,816,594.24
  5. Step 5: Solve for x
    x = 228,816,594.24/16,906.40
  6. Step 6: Final answer
    x = 13,534.32

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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.