Home / 13,788.02-20,682.70-3,927.98

Finding the Fourth Proportional to 13,788.02, 20,682.70 and 3,927.98

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Solution

The fourth proportional to 13,788.02, 20,682.70 and 3,927.98 is: 5,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.02 : 20,682.70 = 3,927.98 : x
  2. Step 2: Convert to fraction form
    13,788.02/20,682.70 = 3,927.98/x
  3. Step 3: Cross multiply
    13,788.02x = 20,682.70 × 3,927.98
  4. Step 4: Simplify right side
    13,788.02x = 81,241,231.95
  5. Step 5: Solve for x
    x = 81,241,231.95/13,788.02
  6. Step 6: Final answer
    x = 5,892.16

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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.