Home / 21,262.73-29,339.47-12,763.05

Finding the Fourth Proportional to 21,262.73, 29,339.47 and 12,763.05

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Solution

The fourth proportional to 21,262.73, 29,339.47 and 12,763.05 is: 17,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.73 : 29,339.47 = 12,763.05 : x
  2. Step 2: Convert to fraction form
    21,262.73/29,339.47 = 12,763.05/x
  3. Step 3: Cross multiply
    21,262.73x = 29,339.47 × 12,763.05
  4. Step 4: Simplify right side
    21,262.73x = 374,461,122.58
  5. Step 5: Solve for x
    x = 374,461,122.58/21,262.73
  6. Step 6: Final answer
    x = 17,611.15

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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.