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Finding the Fourth Proportional to 13,808.43, 20,813.67 and 12,625.17

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Solution

The fourth proportional to 13,808.43, 20,813.67 and 12,625.17 is: 19,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.43 : 20,813.67 = 12,625.17 : x
  2. Step 2: Convert to fraction form
    13,808.43/20,813.67 = 12,625.17/x
  3. Step 3: Cross multiply
    13,808.43x = 20,813.67 × 12,625.17
  4. Step 4: Simplify right side
    13,808.43x = 262,776,122.07
  5. Step 5: Solve for x
    x = 262,776,122.07/13,808.43
  6. Step 6: Final answer
    x = 19,030.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.