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Finding the Fourth Proportional to 16,688.17, 25,035.02 and 7,918.30

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Solution

The fourth proportional to 16,688.17, 25,035.02 and 7,918.30 is: 11,878.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,688.17 : 25,035.02 = 7,918.30 : x
  2. Step 2: Convert to fraction form
    16,688.17/25,035.02 = 7,918.30/x
  3. Step 3: Cross multiply
    16,688.17x = 25,035.02 × 7,918.30
  4. Step 4: Simplify right side
    16,688.17x = 198,234,798.87
  5. Step 5: Solve for x
    x = 198,234,798.87/16,688.17
  6. Step 6: Final answer
    x = 11,878.76

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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.