Home / 13,395.72-18,486.86-8,091.30

Finding the Fourth Proportional to 13,395.72, 18,486.86 and 8,091.30

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Solution

The fourth proportional to 13,395.72, 18,486.86 and 8,091.30 is: 11,166.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.72 : 18,486.86 = 8,091.30 : x
  2. Step 2: Convert to fraction form
    13,395.72/18,486.86 = 8,091.30/x
  3. Step 3: Cross multiply
    13,395.72x = 18,486.86 × 8,091.30
  4. Step 4: Simplify right side
    13,395.72x = 149,582,730.32
  5. Step 5: Solve for x
    x = 149,582,730.32/13,395.72
  6. Step 6: Final answer
    x = 11,166.46

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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.