Home / 12,206.89-18,312.46-5,971.21

Finding the Fourth Proportional to 12,206.89, 18,312.46 and 5,971.21

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Solution

The fourth proportional to 12,206.89, 18,312.46 and 5,971.21 is: 8,957.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.89 : 18,312.46 = 5,971.21 : x
  2. Step 2: Convert to fraction form
    12,206.89/18,312.46 = 5,971.21/x
  3. Step 3: Cross multiply
    12,206.89x = 18,312.46 × 5,971.21
  4. Step 4: Simplify right side
    12,206.89x = 109,347,544.28
  5. Step 5: Solve for x
    x = 109,347,544.28/12,206.89
  6. Step 6: Final answer
    x = 8,957.85

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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.