Home / 15,019.88-20,727.01-8,305.28

Finding the Fourth Proportional to 15,019.88, 20,727.01 and 8,305.28

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Solution

The fourth proportional to 15,019.88, 20,727.01 and 8,305.28 is: 11,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.88 : 20,727.01 = 8,305.28 : x
  2. Step 2: Convert to fraction form
    15,019.88/20,727.01 = 8,305.28/x
  3. Step 3: Cross multiply
    15,019.88x = 20,727.01 × 8,305.28
  4. Step 4: Simplify right side
    15,019.88x = 172,143,497.21
  5. Step 5: Solve for x
    x = 172,143,497.21/15,019.88
  6. Step 6: Final answer
    x = 11,461.05

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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.