Home / 11,171.41-15,411.63-6,921.34

Finding the Fourth Proportional to 11,171.41, 15,411.63 and 6,921.34

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Solution

The fourth proportional to 11,171.41, 15,411.63 and 6,921.34 is: 9,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,171.41 : 15,411.63 = 6,921.34 : x
  2. Step 2: Convert to fraction form
    11,171.41/15,411.63 = 6,921.34/x
  3. Step 3: Cross multiply
    11,171.41x = 15,411.63 × 6,921.34
  4. Step 4: Simplify right side
    11,171.41x = 106,669,131.18
  5. Step 5: Solve for x
    x = 106,669,131.18/11,171.41
  6. Step 6: Final answer
    x = 9,548.40

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Double scale
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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.