Home / 11,099.32-15,315.76-6,385.12

Finding the Fourth Proportional to 11,099.32, 15,315.76 and 6,385.12

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Solution

The fourth proportional to 11,099.32, 15,315.76 and 6,385.12 is: 8,810.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,099.32 : 15,315.76 = 6,385.12 : x
  2. Step 2: Convert to fraction form
    11,099.32/15,315.76 = 6,385.12/x
  3. Step 3: Cross multiply
    11,099.32x = 15,315.76 × 6,385.12
  4. Step 4: Simplify right side
    11,099.32x = 97,792,965.49
  5. Step 5: Solve for x
    x = 97,792,965.49/11,099.32
  6. Step 6: Final answer
    x = 8,810.72

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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.