Home / 9,516.10-13,123.53-8,171.28

Finding the Fourth Proportional to 9,516.10, 13,123.53 and 8,171.28

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Solution

The fourth proportional to 9,516.10, 13,123.53 and 8,171.28 is: 11,268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,516.10 : 13,123.53 = 8,171.28 : x
  2. Step 2: Convert to fraction form
    9,516.10/13,123.53 = 8,171.28/x
  3. Step 3: Cross multiply
    9,516.10x = 13,123.53 × 8,171.28
  4. Step 4: Simplify right side
    9,516.10x = 107,236,038.22
  5. Step 5: Solve for x
    x = 107,236,038.22/9,516.10
  6. Step 6: Final answer
    x = 11,268.91

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Half scale
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Double scale
Find fourth proportional to 9,517.10, 13,124.91 and 8,172.28
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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.