Home / 21,599.33-29,807.66-12,647.21

Finding the Fourth Proportional to 21,599.33, 29,807.66 and 12,647.21

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Solution

The fourth proportional to 21,599.33, 29,807.66 and 12,647.21 is: 17,453.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,599.33 : 29,807.66 = 12,647.21 : x
  2. Step 2: Convert to fraction form
    21,599.33/29,807.66 = 12,647.21/x
  3. Step 3: Cross multiply
    21,599.33x = 29,807.66 × 12,647.21
  4. Step 4: Simplify right side
    21,599.33x = 376,983,618.21
  5. Step 5: Solve for x
    x = 376,983,618.21/21,599.33
  6. Step 6: Final answer
    x = 17,453.49

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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.