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Finding the Fourth Proportional to 13,492.08, 18,612.72 and 8,774.64

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Solution

The fourth proportional to 13,492.08, 18,612.72 and 8,774.64 is: 12,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.08 : 18,612.72 = 8,774.64 : x
  2. Step 2: Convert to fraction form
    13,492.08/18,612.72 = 8,774.64/x
  3. Step 3: Cross multiply
    13,492.08x = 18,612.72 × 8,774.64
  4. Step 4: Simplify right side
    13,492.08x = 163,319,917.42
  5. Step 5: Solve for x
    x = 163,319,917.42/13,492.08
  6. Step 6: Final answer
    x = 12,104.87

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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.