Home / 12,531.36-18,787.32-5,137.68

Finding the Fourth Proportional to 12,531.36, 18,787.32 and 5,137.68

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Solution

The fourth proportional to 12,531.36, 18,787.32 and 5,137.68 is: 7,702.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.36 : 18,787.32 = 5,137.68 : x
  2. Step 2: Convert to fraction form
    12,531.36/18,787.32 = 5,137.68/x
  3. Step 3: Cross multiply
    12,531.36x = 18,787.32 × 5,137.68
  4. Step 4: Simplify right side
    12,531.36x = 96,523,238.22
  5. Step 5: Solve for x
    x = 96,523,238.22/12,531.36
  6. Step 6: Final answer
    x = 7,702.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.