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Finding the Fourth Proportional to 12,701.25, 17,529.75 and 7,398.99

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Solution

The fourth proportional to 12,701.25, 17,529.75 and 7,398.99 is: 10,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.25 : 17,529.75 = 7,398.99 : x
  2. Step 2: Convert to fraction form
    12,701.25/17,529.75 = 7,398.99/x
  3. Step 3: Cross multiply
    12,701.25x = 17,529.75 × 7,398.99
  4. Step 4: Simplify right side
    12,701.25x = 129,702,444.95
  5. Step 5: Solve for x
    x = 129,702,444.95/12,701.25
  6. Step 6: Final answer
    x = 10,211.79

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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.