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Finding the Fourth Proportional to 16,881.70, 25,302.30 and 7,015.90

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Solution

The fourth proportional to 16,881.70, 25,302.30 and 7,015.90 is: 10,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,881.70 : 25,302.30 = 7,015.90 : x
  2. Step 2: Convert to fraction form
    16,881.70/25,302.30 = 7,015.90/x
  3. Step 3: Cross multiply
    16,881.70x = 25,302.30 × 7,015.90
  4. Step 4: Simplify right side
    16,881.70x = 177,518,406.57
  5. Step 5: Solve for x
    x = 177,518,406.57/16,881.70
  6. Step 6: Final answer
    x = 10,515.43

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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.