Home / 13,131.02-18,120.84-7,542.02

Finding the Fourth Proportional to 13,131.02, 18,120.84 and 7,542.02

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Solution

The fourth proportional to 13,131.02, 18,120.84 and 7,542.02 is: 10,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.02 : 18,120.84 = 7,542.02 : x
  2. Step 2: Convert to fraction form
    13,131.02/18,120.84 = 7,542.02/x
  3. Step 3: Cross multiply
    13,131.02x = 18,120.84 × 7,542.02
  4. Step 4: Simplify right side
    13,131.02x = 136,667,737.70
  5. Step 5: Solve for x
    x = 136,667,737.70/13,131.02
  6. Step 6: Final answer
    x = 10,408.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.