Home / 15,374.90-21,219.37-8,661.82

Finding the Fourth Proportional to 15,374.90, 21,219.37 and 8,661.82

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Solution

The fourth proportional to 15,374.90, 21,219.37 and 8,661.82 is: 11,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.90 : 21,219.37 = 8,661.82 : x
  2. Step 2: Convert to fraction form
    15,374.90/21,219.37 = 8,661.82/x
  3. Step 3: Cross multiply
    15,374.90x = 21,219.37 × 8,661.82
  4. Step 4: Simplify right side
    15,374.90x = 183,798,363.45
  5. Step 5: Solve for x
    x = 183,798,363.45/15,374.90
  6. Step 6: Final answer
    x = 11,954.44

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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.