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Finding the Fourth Proportional to 21,637.69, 29,860.10 and 11,701.69

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Solution

The fourth proportional to 21,637.69, 29,860.10 and 11,701.69 is: 16,148.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.69 : 29,860.10 = 11,701.69 : x
  2. Step 2: Convert to fraction form
    21,637.69/29,860.10 = 11,701.69/x
  3. Step 3: Cross multiply
    21,637.69x = 29,860.10 × 11,701.69
  4. Step 4: Simplify right side
    21,637.69x = 349,413,544.29
  5. Step 5: Solve for x
    x = 349,413,544.29/21,637.69
  6. Step 6: Final answer
    x = 16,148.38

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Half scale
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Double scale
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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.