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Finding the Fourth Proportional to 21,197.58, 29,257.95 and 12,250.26

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Solution

The fourth proportional to 21,197.58, 29,257.95 and 12,250.26 is: 16,908.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.58 : 29,257.95 = 12,250.26 : x
  2. Step 2: Convert to fraction form
    21,197.58/29,257.95 = 12,250.26/x
  3. Step 3: Cross multiply
    21,197.58x = 29,257.95 × 12,250.26
  4. Step 4: Simplify right side
    21,197.58x = 358,417,494.57
  5. Step 5: Solve for x
    x = 358,417,494.57/21,197.58
  6. Step 6: Final answer
    x = 16,908.42

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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.