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Finding the Fourth Proportional to 12,510.38, 17,264.87 and 6,921.38

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Solution

The fourth proportional to 12,510.38, 17,264.87 and 6,921.38 is: 9,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.38 : 17,264.87 = 6,921.38 : x
  2. Step 2: Convert to fraction form
    12,510.38/17,264.87 = 6,921.38/x
  3. Step 3: Cross multiply
    12,510.38x = 17,264.87 × 6,921.38
  4. Step 4: Simplify right side
    12,510.38x = 119,496,604.99
  5. Step 5: Solve for x
    x = 119,496,604.99/12,510.38
  6. Step 6: Final answer
    x = 9,551.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.