Home / 15,003.13-20,704.32-8,715.91

Finding the Fourth Proportional to 15,003.13, 20,704.32 and 8,715.91

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Solution

The fourth proportional to 15,003.13, 20,704.32 and 8,715.91 is: 12,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.13 : 20,704.32 = 8,715.91 : x
  2. Step 2: Convert to fraction form
    15,003.13/20,704.32 = 8,715.91/x
  3. Step 3: Cross multiply
    15,003.13x = 20,704.32 × 8,715.91
  4. Step 4: Simplify right side
    15,003.13x = 180,456,842.63
  5. Step 5: Solve for x
    x = 180,456,842.63/15,003.13
  6. Step 6: Final answer
    x = 12,027.95

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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.