Home / 21,530.72-29,712.92-12,099.04

Finding the Fourth Proportional to 21,530.72, 29,712.92 and 12,099.04

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Solution

The fourth proportional to 21,530.72, 29,712.92 and 12,099.04 is: 16,696.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530.72 : 29,712.92 = 12,099.04 : x
  2. Step 2: Convert to fraction form
    21,530.72/29,712.92 = 12,099.04/x
  3. Step 3: Cross multiply
    21,530.72x = 29,712.92 × 12,099.04
  4. Step 4: Simplify right side
    21,530.72x = 359,497,807.60
  5. Step 5: Solve for x
    x = 359,497,807.60/21,530.72
  6. Step 6: Final answer
    x = 16,696.97

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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.