Home / 12,855.15-17,740.24-7,550.06

Finding the Fourth Proportional to 12,855.15, 17,740.24 and 7,550.06

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Solution

The fourth proportional to 12,855.15, 17,740.24 and 7,550.06 is: 10,419.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.15 : 17,740.24 = 7,550.06 : x
  2. Step 2: Convert to fraction form
    12,855.15/17,740.24 = 7,550.06/x
  3. Step 3: Cross multiply
    12,855.15x = 17,740.24 × 7,550.06
  4. Step 4: Simplify right side
    12,855.15x = 133,939,768.84
  5. Step 5: Solve for x
    x = 133,939,768.84/12,855.15
  6. Step 6: Final answer
    x = 10,419.15

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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.