Home / 11,531.57-15,914.39-6,427.89

Finding the Fourth Proportional to 11,531.57, 15,914.39 and 6,427.89

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Solution

The fourth proportional to 11,531.57, 15,914.39 and 6,427.89 is: 8,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.57 : 15,914.39 = 6,427.89 : x
  2. Step 2: Convert to fraction form
    11,531.57/15,914.39 = 6,427.89/x
  3. Step 3: Cross multiply
    11,531.57x = 15,914.39 × 6,427.89
  4. Step 4: Simplify right side
    11,531.57x = 102,295,916.20
  5. Step 5: Solve for x
    x = 102,295,916.20/11,531.57
  6. Step 6: Final answer
    x = 8,870.95

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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.