Home / 19,943.26-29,925.30-12,921.44

Finding the Fourth Proportional to 19,943.26, 29,925.30 and 12,921.44

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Solution

The fourth proportional to 19,943.26, 29,925.30 and 12,921.44 is: 19,388.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.26 : 29,925.30 = 12,921.44 : x
  2. Step 2: Convert to fraction form
    19,943.26/29,925.30 = 12,921.44/x
  3. Step 3: Cross multiply
    19,943.26x = 29,925.30 × 12,921.44
  4. Step 4: Simplify right side
    19,943.26x = 386,678,075.55
  5. Step 5: Solve for x
    x = 386,678,075.55/19,943.26
  6. Step 6: Final answer
    x = 19,388.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.