Home / 13,112.92-18,102.53-8,886.32

Finding the Fourth Proportional to 13,112.92, 18,102.53 and 8,886.32

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Solution

The fourth proportional to 13,112.92, 18,102.53 and 8,886.32 is: 12,267.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.92 : 18,102.53 = 8,886.32 : x
  2. Step 2: Convert to fraction form
    13,112.92/18,102.53 = 8,886.32/x
  3. Step 3: Cross multiply
    13,112.92x = 18,102.53 × 8,886.32
  4. Step 4: Simplify right side
    13,112.92x = 160,864,873.98
  5. Step 5: Solve for x
    x = 160,864,873.98/13,112.92
  6. Step 6: Final answer
    x = 12,267.66

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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.