Home / 12,235.19-16,850.30-11,128.02

Finding the Fourth Proportional to 12,235.19, 16,850.30 and 11,128.02

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Solution

The fourth proportional to 12,235.19, 16,850.30 and 11,128.02 is: 15,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.19 : 16,850.30 = 11,128.02 : x
  2. Step 2: Convert to fraction form
    12,235.19/16,850.30 = 11,128.02/x
  3. Step 3: Cross multiply
    12,235.19x = 16,850.30 × 11,128.02
  4. Step 4: Simplify right side
    12,235.19x = 187,510,356.58
  5. Step 5: Solve for x
    x = 187,510,356.58/12,235.19
  6. Step 6: Final answer
    x = 15,325.50

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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.