Home / 12,839.25-19,260.50-4,407.40

Finding the Fourth Proportional to 12,839.25, 19,260.50 and 4,407.40

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Solution

The fourth proportional to 12,839.25, 19,260.50 and 4,407.40 is: 6,611.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.25 : 19,260.50 = 4,407.40 : x
  2. Step 2: Convert to fraction form
    12,839.25/19,260.50 = 4,407.40/x
  3. Step 3: Cross multiply
    12,839.25x = 19,260.50 × 4,407.40
  4. Step 4: Simplify right side
    12,839.25x = 84,888,727.70
  5. Step 5: Solve for x
    x = 84,888,727.70/12,839.25
  6. Step 6: Final answer
    x = 6,611.66

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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.