Home / 11,187.90-15,439.75-6,408.63

Finding the Fourth Proportional to 11,187.90, 15,439.75 and 6,408.63

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Solution

The fourth proportional to 11,187.90, 15,439.75 and 6,408.63 is: 8,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.90 : 15,439.75 = 6,408.63 : x
  2. Step 2: Convert to fraction form
    11,187.90/15,439.75 = 6,408.63/x
  3. Step 3: Cross multiply
    11,187.90x = 15,439.75 × 6,408.63
  4. Step 4: Simplify right side
    11,187.90x = 98,947,629.02
  5. Step 5: Solve for x
    x = 98,947,629.02/11,187.90
  6. Step 6: Final answer
    x = 8,844.16

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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.