Home / 21,529.21-29,711.19-12,097.75

Finding the Fourth Proportional to 21,529.21, 29,711.19 and 12,097.75

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Solution

The fourth proportional to 21,529.21, 29,711.19 and 12,097.75 is: 16,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.21 : 29,711.19 = 12,097.75 : x
  2. Step 2: Convert to fraction form
    21,529.21/29,711.19 = 12,097.75/x
  3. Step 3: Cross multiply
    21,529.21x = 29,711.19 × 12,097.75
  4. Step 4: Simplify right side
    21,529.21x = 359,438,548.82
  5. Step 5: Solve for x
    x = 359,438,548.82/21,529.21
  6. Step 6: Final answer
    x = 16,695.39

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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.