Home / 21,152.94-29,191.23-11,721.66

Finding the Fourth Proportional to 21,152.94, 29,191.23 and 11,721.66

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Solution

The fourth proportional to 21,152.94, 29,191.23 and 11,721.66 is: 16,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.94 : 29,191.23 = 11,721.66 : x
  2. Step 2: Convert to fraction form
    21,152.94/29,191.23 = 11,721.66/x
  3. Step 3: Cross multiply
    21,152.94x = 29,191.23 × 11,721.66
  4. Step 4: Simplify right side
    21,152.94x = 342,169,673.04
  5. Step 5: Solve for x
    x = 342,169,673.04/21,152.94
  6. Step 6: Final answer
    x = 16,175.99

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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.