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Finding the Fourth Proportional to 21,364.82, 29,483.91 and 11,933.40

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Solution

The fourth proportional to 21,364.82, 29,483.91 and 11,933.40 is: 16,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.82 : 29,483.91 = 11,933.40 : x
  2. Step 2: Convert to fraction form
    21,364.82/29,483.91 = 11,933.40/x
  3. Step 3: Cross multiply
    21,364.82x = 29,483.91 × 11,933.40
  4. Step 4: Simplify right side
    21,364.82x = 351,843,291.59
  5. Step 5: Solve for x
    x = 351,843,291.59/21,364.82
  6. Step 6: Final answer
    x = 16,468.35

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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.