Home / 12,487.05-18,712.08-5,460.63

Finding the Fourth Proportional to 12,487.05, 18,712.08 and 5,460.63

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Solution

The fourth proportional to 12,487.05, 18,712.08 and 5,460.63 is: 8,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.05 : 18,712.08 = 5,460.63 : x
  2. Step 2: Convert to fraction form
    12,487.05/18,712.08 = 5,460.63/x
  3. Step 3: Cross multiply
    12,487.05x = 18,712.08 × 5,460.63
  4. Step 4: Simplify right side
    12,487.05x = 102,179,745.41
  5. Step 5: Solve for x
    x = 102,179,745.41/12,487.05
  6. Step 6: Final answer
    x = 8,182.86

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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.