Home / 21,178.08-29,225.97-12,223.85

Finding the Fourth Proportional to 21,178.08, 29,225.97 and 12,223.85

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Solution

The fourth proportional to 21,178.08, 29,225.97 and 12,223.85 is: 16,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.08 : 29,225.97 = 12,223.85 : x
  2. Step 2: Convert to fraction form
    21,178.08/29,225.97 = 12,223.85/x
  3. Step 3: Cross multiply
    21,178.08x = 29,225.97 × 12,223.85
  4. Step 4: Simplify right side
    21,178.08x = 357,253,727.25
  5. Step 5: Solve for x
    x = 357,253,727.25/21,178.08
  6. Step 6: Final answer
    x = 16,869.03

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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.