Home / 13,700.96-20,554.92-3,840.28

Finding the Fourth Proportional to 13,700.96, 20,554.92 and 3,840.28

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Solution

The fourth proportional to 13,700.96, 20,554.92 and 3,840.28 is: 5,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.96 : 20,554.92 = 3,840.28 : x
  2. Step 2: Convert to fraction form
    13,700.96/20,554.92 = 3,840.28/x
  3. Step 3: Cross multiply
    13,700.96x = 20,554.92 × 3,840.28
  4. Step 4: Simplify right side
    13,700.96x = 78,936,648.18
  5. Step 5: Solve for x
    x = 78,936,648.18/13,700.96
  6. Step 6: Final answer
    x = 5,761.40

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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.