Home / 21,147.23-29,186.29-12,192.99

Finding the Fourth Proportional to 21,147.23, 29,186.29 and 12,192.99

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Solution

The fourth proportional to 21,147.23, 29,186.29 and 12,192.99 is: 16,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.23 : 29,186.29 = 12,192.99 : x
  2. Step 2: Convert to fraction form
    21,147.23/29,186.29 = 12,192.99/x
  3. Step 3: Cross multiply
    21,147.23x = 29,186.29 × 12,192.99
  4. Step 4: Simplify right side
    21,147.23x = 355,868,142.11
  5. Step 5: Solve for x
    x = 355,868,142.11/21,147.23
  6. Step 6: Final answer
    x = 16,828.12

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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.