Home / 13,575.20-18,727.10-8,260.79

Finding the Fourth Proportional to 13,575.20, 18,727.10 and 8,260.79

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Solution

The fourth proportional to 13,575.20, 18,727.10 and 8,260.79 is: 11,395.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.20 : 18,727.10 = 8,260.79 : x
  2. Step 2: Convert to fraction form
    13,575.20/18,727.10 = 8,260.79/x
  3. Step 3: Cross multiply
    13,575.20x = 18,727.10 × 8,260.79
  4. Step 4: Simplify right side
    13,575.20x = 154,700,536.45
  5. Step 5: Solve for x
    x = 154,700,536.45/13,575.20
  6. Step 6: Final answer
    x = 11,395.82

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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.