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Finding the Fourth Proportional to 21,404.25, 29,537.87 and 11,973.02

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Solution

The fourth proportional to 21,404.25, 29,537.87 and 11,973.02 is: 16,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.25 : 29,537.87 = 11,973.02 : x
  2. Step 2: Convert to fraction form
    21,404.25/29,537.87 = 11,973.02/x
  3. Step 3: Cross multiply
    21,404.25x = 29,537.87 × 11,973.02
  4. Step 4: Simplify right side
    21,404.25x = 353,657,300.71
  5. Step 5: Solve for x
    x = 353,657,300.71/21,404.25
  6. Step 6: Final answer
    x = 16,522.76

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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.