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Finding the Fourth Proportional to 21,375.93, 29,498.71 and 11,944.49

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Solution

The fourth proportional to 21,375.93, 29,498.71 and 11,944.49 is: 16,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.93 : 29,498.71 = 11,944.49 : x
  2. Step 2: Convert to fraction form
    21,375.93/29,498.71 = 11,944.49/x
  3. Step 3: Cross multiply
    21,375.93x = 29,498.71 × 11,944.49
  4. Step 4: Simplify right side
    21,375.93x = 352,346,941.02
  5. Step 5: Solve for x
    x = 352,346,941.02/21,375.93
  6. Step 6: Final answer
    x = 16,483.35

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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.