Home / 21,146.23-29,184.91-12,191.99

Finding the Fourth Proportional to 21,146.23, 29,184.91 and 12,191.99

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Solution

The fourth proportional to 21,146.23, 29,184.91 and 12,191.99 is: 16,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.23 : 29,184.91 = 12,191.99 : x
  2. Step 2: Convert to fraction form
    21,146.23/29,184.91 = 12,191.99/x
  3. Step 3: Cross multiply
    21,146.23x = 29,184.91 × 12,191.99
  4. Step 4: Simplify right side
    21,146.23x = 355,821,954.47
  5. Step 5: Solve for x
    x = 355,821,954.47/21,146.23
  6. Step 6: Final answer
    x = 16,826.73

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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.