Home / 13,161.48-18,155.52-7,855.44

Finding the Fourth Proportional to 13,161.48, 18,155.52 and 7,855.44

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Solution

The fourth proportional to 13,161.48, 18,155.52 and 7,855.44 is: 10,836.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.48 : 18,155.52 = 7,855.44 : x
  2. Step 2: Convert to fraction form
    13,161.48/18,155.52 = 7,855.44/x
  3. Step 3: Cross multiply
    13,161.48x = 18,155.52 × 7,855.44
  4. Step 4: Simplify right side
    13,161.48x = 142,619,598.03
  5. Step 5: Solve for x
    x = 142,619,598.03/13,161.48
  6. Step 6: Final answer
    x = 10,836.14

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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.