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Finding the Fourth Proportional to 12,381.17, 17,085.06 and 7,344.99

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Solution

The fourth proportional to 12,381.17, 17,085.06 and 7,344.99 is: 10,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.17 : 17,085.06 = 7,344.99 : x
  2. Step 2: Convert to fraction form
    12,381.17/17,085.06 = 7,344.99/x
  3. Step 3: Cross multiply
    12,381.17x = 17,085.06 × 7,344.99
  4. Step 4: Simplify right side
    12,381.17x = 125,489,594.85
  5. Step 5: Solve for x
    x = 125,489,594.85/12,381.17
  6. Step 6: Final answer
    x = 10,135.52

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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.