Home / 12,641.02-18,961.53-11,861.90

Finding the Fourth Proportional to 12,641.02, 18,961.53 and 11,861.90

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Solution

The fourth proportional to 12,641.02, 18,961.53 and 11,861.90 is: 17,792.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.02 : 18,961.53 = 11,861.90 : x
  2. Step 2: Convert to fraction form
    12,641.02/18,961.53 = 11,861.90/x
  3. Step 3: Cross multiply
    12,641.02x = 18,961.53 × 11,861.90
  4. Step 4: Simplify right side
    12,641.02x = 224,919,857.94
  5. Step 5: Solve for x
    x = 224,919,857.94/12,641.02
  6. Step 6: Final answer
    x = 17,792.86

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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.