Home / 15,160.67-20,921.25-8,787.39

Finding the Fourth Proportional to 15,160.67, 20,921.25 and 8,787.39

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Solution

The fourth proportional to 15,160.67, 20,921.25 and 8,787.39 is: 12,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.67 : 20,921.25 = 8,787.39 : x
  2. Step 2: Convert to fraction form
    15,160.67/20,921.25 = 8,787.39/x
  3. Step 3: Cross multiply
    15,160.67x = 20,921.25 × 8,787.39
  4. Step 4: Simplify right side
    15,160.67x = 183,843,137.54
  5. Step 5: Solve for x
    x = 183,843,137.54/15,160.67
  6. Step 6: Final answer
    x = 12,126.32

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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.