Home / 13,199.15-18,214.85-7,230.69

Finding the Fourth Proportional to 13,199.15, 18,214.85 and 7,230.69

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Solution

The fourth proportional to 13,199.15, 18,214.85 and 7,230.69 is: 9,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.15 : 18,214.85 = 7,230.69 : x
  2. Step 2: Convert to fraction form
    13,199.15/18,214.85 = 7,230.69/x
  3. Step 3: Cross multiply
    13,199.15x = 18,214.85 × 7,230.69
  4. Step 4: Simplify right side
    13,199.15x = 131,705,870.13
  5. Step 5: Solve for x
    x = 131,705,870.13/13,199.15
  6. Step 6: Final answer
    x = 9,978.36

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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.