Home / 12,887.20-19,334.40-5,495.20

Finding the Fourth Proportional to 12,887.20, 19,334.40 and 5,495.20

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Solution

The fourth proportional to 12,887.20, 19,334.40 and 5,495.20 is: 8,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.20 : 19,334.40 = 5,495.20 : x
  2. Step 2: Convert to fraction form
    12,887.20/19,334.40 = 5,495.20/x
  3. Step 3: Cross multiply
    12,887.20x = 19,334.40 × 5,495.20
  4. Step 4: Simplify right side
    12,887.20x = 106,246,394.88
  5. Step 5: Solve for x
    x = 106,246,394.88/12,887.20
  6. Step 6: Final answer
    x = 8,244.34

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1.5x scale

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.