Home / 21,146.52-29,186.28-12,199.80

Finding the Fourth Proportional to 21,146.52, 29,186.28 and 12,199.80

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Solution

The fourth proportional to 21,146.52, 29,186.28 and 12,199.80 is: 16,838.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.52 : 29,186.28 = 12,199.80 : x
  2. Step 2: Convert to fraction form
    21,146.52/29,186.28 = 12,199.80/x
  3. Step 3: Cross multiply
    21,146.52x = 29,186.28 × 12,199.80
  4. Step 4: Simplify right side
    21,146.52x = 356,066,778.74
  5. Step 5: Solve for x
    x = 356,066,778.74/21,146.52
  6. Step 6: Final answer
    x = 16,838.08

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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.