Home / 13,701.60-20,557.80-5,380.20

Finding the Fourth Proportional to 13,701.60, 20,557.80 and 5,380.20

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Solution

The fourth proportional to 13,701.60, 20,557.80 and 5,380.20 is: 8,072.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.60 : 20,557.80 = 5,380.20 : x
  2. Step 2: Convert to fraction form
    13,701.60/20,557.80 = 5,380.20/x
  3. Step 3: Cross multiply
    13,701.60x = 20,557.80 × 5,380.20
  4. Step 4: Simplify right side
    13,701.60x = 110,605,075.56
  5. Step 5: Solve for x
    x = 110,605,075.56/13,701.60
  6. Step 6: Final answer
    x = 8,072.42

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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.