Home / 12,641.50-18,961.47-3,875.74

Finding the Fourth Proportional to 12,641.50, 18,961.47 and 3,875.74

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Solution

The fourth proportional to 12,641.50, 18,961.47 and 3,875.74 is: 5,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.50 : 18,961.47 = 3,875.74 : x
  2. Step 2: Convert to fraction form
    12,641.50/18,961.47 = 3,875.74/x
  3. Step 3: Cross multiply
    12,641.50x = 18,961.47 × 3,875.74
  4. Step 4: Simplify right side
    12,641.50x = 73,489,727.74
  5. Step 5: Solve for x
    x = 73,489,727.74/12,641.50
  6. Step 6: Final answer
    x = 5,813.37

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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.