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Finding the Fourth Proportional to 12,512.88, 17,269.91 and 7,210.78

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Solution

The fourth proportional to 12,512.88, 17,269.91 and 7,210.78 is: 9,952.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.88 : 17,269.91 = 7,210.78 : x
  2. Step 2: Convert to fraction form
    12,512.88/17,269.91 = 7,210.78/x
  3. Step 3: Cross multiply
    12,512.88x = 17,269.91 × 7,210.78
  4. Step 4: Simplify right side
    12,512.88x = 124,529,521.63
  5. Step 5: Solve for x
    x = 124,529,521.63/12,512.88
  6. Step 6: Final answer
    x = 9,952.11

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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.