Home / 15,012.85-20,717.54-8,298.61

Finding the Fourth Proportional to 15,012.85, 20,717.54 and 8,298.61

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Solution

The fourth proportional to 15,012.85, 20,717.54 and 8,298.61 is: 11,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.85 : 20,717.54 = 8,298.61 : x
  2. Step 2: Convert to fraction form
    15,012.85/20,717.54 = 8,298.61/x
  3. Step 3: Cross multiply
    15,012.85x = 20,717.54 × 8,298.61
  4. Step 4: Simplify right side
    15,012.85x = 171,926,784.62
  5. Step 5: Solve for x
    x = 171,926,784.62/15,012.85
  6. Step 6: Final answer
    x = 11,451.98

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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.