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Finding the Fourth Proportional to 21,073.74, 29,079.27 and 11,641.74

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Solution

The fourth proportional to 21,073.74, 29,079.27 and 11,641.74 is: 16,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.74 : 29,079.27 = 11,641.74 : x
  2. Step 2: Convert to fraction form
    21,073.74/29,079.27 = 11,641.74/x
  3. Step 3: Cross multiply
    21,073.74x = 29,079.27 × 11,641.74
  4. Step 4: Simplify right side
    21,073.74x = 338,533,300.73
  5. Step 5: Solve for x
    x = 338,533,300.73/21,073.74
  6. Step 6: Final answer
    x = 16,064.22

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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.