Home / 11,551.46-15,940.41-6,515.69

Finding the Fourth Proportional to 11,551.46, 15,940.41 and 6,515.69

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Solution

The fourth proportional to 11,551.46, 15,940.41 and 6,515.69 is: 8,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,551.46 : 15,940.41 = 6,515.69 : x
  2. Step 2: Convert to fraction form
    11,551.46/15,940.41 = 6,515.69/x
  3. Step 3: Cross multiply
    11,551.46x = 15,940.41 × 6,515.69
  4. Step 4: Simplify right side
    11,551.46x = 103,862,770.03
  5. Step 5: Solve for x
    x = 103,862,770.03/11,551.46
  6. Step 6: Final answer
    x = 8,991.31

Related Problems

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Half scale
Find fourth proportional to 23,102.92, 31,880.82 and 13,031.38
Double scale
Find fourth proportional to 11,552.46, 15,941.79 and 6,516.69
Similar ratio
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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.