Home / 21,699.45-29,950.20-14,132.61

Finding the Fourth Proportional to 21,699.45, 29,950.20 and 14,132.61

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Solution

The fourth proportional to 21,699.45, 29,950.20 and 14,132.61 is: 19,506.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.45 : 29,950.20 = 14,132.61 : x
  2. Step 2: Convert to fraction form
    21,699.45/29,950.20 = 14,132.61/x
  3. Step 3: Cross multiply
    21,699.45x = 29,950.20 × 14,132.61
  4. Step 4: Simplify right side
    21,699.45x = 423,274,496.02
  5. Step 5: Solve for x
    x = 423,274,496.02/21,699.45
  6. Step 6: Final answer
    x = 19,506.23

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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.