Home / 21,569.96-29,761.62-12,135.08

Finding the Fourth Proportional to 21,569.96, 29,761.62 and 12,135.08

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Solution

The fourth proportional to 21,569.96, 29,761.62 and 12,135.08 is: 16,743.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.96 : 29,761.62 = 12,135.08 : x
  2. Step 2: Convert to fraction form
    21,569.96/29,761.62 = 12,135.08/x
  3. Step 3: Cross multiply
    21,569.96x = 29,761.62 × 12,135.08
  4. Step 4: Simplify right side
    21,569.96x = 361,159,639.63
  5. Step 5: Solve for x
    x = 361,159,639.63/21,569.96
  6. Step 6: Final answer
    x = 16,743.64

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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.