Home / 21,630.39-29,851.70-12,200.91

Finding the Fourth Proportional to 21,630.39, 29,851.70 and 12,200.91

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Solution

The fourth proportional to 21,630.39, 29,851.70 and 12,200.91 is: 16,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.39 : 29,851.70 = 12,200.91 : x
  2. Step 2: Convert to fraction form
    21,630.39/29,851.70 = 12,200.91/x
  3. Step 3: Cross multiply
    21,630.39x = 29,851.70 × 12,200.91
  4. Step 4: Simplify right side
    21,630.39x = 364,217,844.04
  5. Step 5: Solve for x
    x = 364,217,844.04/21,630.39
  6. Step 6: Final answer
    x = 16,838.25

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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.