Home / 21,424.97-29,569.94-12,810.56

Finding the Fourth Proportional to 21,424.97, 29,569.94 and 12,810.56

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Solution

The fourth proportional to 21,424.97, 29,569.94 and 12,810.56 is: 17,680.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.97 : 29,569.94 = 12,810.56 : x
  2. Step 2: Convert to fraction form
    21,424.97/29,569.94 = 12,810.56/x
  3. Step 3: Cross multiply
    21,424.97x = 29,569.94 × 12,810.56
  4. Step 4: Simplify right side
    21,424.97x = 378,807,500.44
  5. Step 5: Solve for x
    x = 378,807,500.44/21,424.97
  6. Step 6: Final answer
    x = 17,680.66

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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.