Home / 12,155.04-18,229.80-7,936.95

Finding the Fourth Proportional to 12,155.04, 18,229.80 and 7,936.95

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Solution

The fourth proportional to 12,155.04, 18,229.80 and 7,936.95 is: 11,903.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.04 : 18,229.80 = 7,936.95 : x
  2. Step 2: Convert to fraction form
    12,155.04/18,229.80 = 7,936.95/x
  3. Step 3: Cross multiply
    12,155.04x = 18,229.80 × 7,936.95
  4. Step 4: Simplify right side
    12,155.04x = 144,689,011.11
  5. Step 5: Solve for x
    x = 144,689,011.11/12,155.04
  6. Step 6: Final answer
    x = 11,903.62

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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.