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Finding the Fourth Proportional to 15,120.93, 20,863.84 and 8,832.09

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Solution

The fourth proportional to 15,120.93, 20,863.84 and 8,832.09 is: 12,186.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.93 : 20,863.84 = 8,832.09 : x
  2. Step 2: Convert to fraction form
    15,120.93/20,863.84 = 8,832.09/x
  3. Step 3: Cross multiply
    15,120.93x = 20,863.84 × 8,832.09
  4. Step 4: Simplify right side
    15,120.93x = 184,271,312.63
  5. Step 5: Solve for x
    x = 184,271,312.63/15,120.93
  6. Step 6: Final answer
    x = 12,186.51

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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.