Home / 12,645.02-18,965.10-3,877.58

Finding the Fourth Proportional to 12,645.02, 18,965.10 and 3,877.58

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Solution

The fourth proportional to 12,645.02, 18,965.10 and 3,877.58 is: 5,815.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.02 : 18,965.10 = 3,877.58 : x
  2. Step 2: Convert to fraction form
    12,645.02/18,965.10 = 3,877.58/x
  3. Step 3: Cross multiply
    12,645.02x = 18,965.10 × 3,877.58
  4. Step 4: Simplify right side
    12,645.02x = 73,538,692.46
  5. Step 5: Solve for x
    x = 73,538,692.46/12,645.02
  6. Step 6: Final answer
    x = 5,815.62

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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.