Home / 15,013.12-20,717.04-8,298.61

Finding the Fourth Proportional to 15,013.12, 20,717.04 and 8,298.61

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Solution

The fourth proportional to 15,013.12, 20,717.04 and 8,298.61 is: 11,451.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.12 : 20,717.04 = 8,298.61 : x
  2. Step 2: Convert to fraction form
    15,013.12/20,717.04 = 8,298.61/x
  3. Step 3: Cross multiply
    15,013.12x = 20,717.04 × 8,298.61
  4. Step 4: Simplify right side
    15,013.12x = 171,922,635.31
  5. Step 5: Solve for x
    x = 171,922,635.31/15,013.12
  6. Step 6: Final answer
    x = 11,451.49

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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.