Home / 12,139.74-18,209.61-3,374.64

Finding the Fourth Proportional to 12,139.74, 18,209.61 and 3,374.64

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Solution

The fourth proportional to 12,139.74, 18,209.61 and 3,374.64 is: 5,061.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.74 : 18,209.61 = 3,374.64 : x
  2. Step 2: Convert to fraction form
    12,139.74/18,209.61 = 3,374.64/x
  3. Step 3: Cross multiply
    12,139.74x = 18,209.61 × 3,374.64
  4. Step 4: Simplify right side
    12,139.74x = 61,450,878.29
  5. Step 5: Solve for x
    x = 61,450,878.29/12,139.74
  6. Step 6: Final answer
    x = 5,061.96

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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.