Home / 13,700.11-20,548.55-3,840.18

Finding the Fourth Proportional to 13,700.11, 20,548.55 and 3,840.18

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Solution

The fourth proportional to 13,700.11, 20,548.55 and 3,840.18 is: 5,759.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.11 : 20,548.55 = 3,840.18 : x
  2. Step 2: Convert to fraction form
    13,700.11/20,548.55 = 3,840.18/x
  3. Step 3: Cross multiply
    13,700.11x = 20,548.55 × 3,840.18
  4. Step 4: Simplify right side
    13,700.11x = 78,910,140.34
  5. Step 5: Solve for x
    x = 78,910,140.34/13,700.11
  6. Step 6: Final answer
    x = 5,759.82

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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.