Home / 13,099.32-18,079.80-8,630.28

Finding the Fourth Proportional to 13,099.32, 18,079.80 and 8,630.28

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Solution

The fourth proportional to 13,099.32, 18,079.80 and 8,630.28 is: 11,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.32 : 18,079.80 = 8,630.28 : x
  2. Step 2: Convert to fraction form
    13,099.32/18,079.80 = 8,630.28/x
  3. Step 3: Cross multiply
    13,099.32x = 18,079.80 × 8,630.28
  4. Step 4: Simplify right side
    13,099.32x = 156,033,736.34
  5. Step 5: Solve for x
    x = 156,033,736.34/13,099.32
  6. Step 6: Final answer
    x = 11,911.59

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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.