Home / 12,028.31-18,037.85-4,129.36

Finding the Fourth Proportional to 12,028.31, 18,037.85 and 4,129.36

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Solution

The fourth proportional to 12,028.31, 18,037.85 and 4,129.36 is: 6,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.31 : 18,037.85 = 4,129.36 : x
  2. Step 2: Convert to fraction form
    12,028.31/18,037.85 = 4,129.36/x
  3. Step 3: Cross multiply
    12,028.31x = 18,037.85 × 4,129.36
  4. Step 4: Simplify right side
    12,028.31x = 74,484,710.53
  5. Step 5: Solve for x
    x = 74,484,710.53/12,028.31
  6. Step 6: Final answer
    x = 6,192.45

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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.