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Finding the Fourth Proportional to 27,155.08, 40,738.96 and 8,434.12

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Solution

The fourth proportional to 27,155.08, 40,738.96 and 8,434.12 is: 12,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,155.08 : 40,738.96 = 8,434.12 : x
  2. Step 2: Convert to fraction form
    27,155.08/40,738.96 = 8,434.12/x
  3. Step 3: Cross multiply
    27,155.08x = 40,738.96 × 8,434.12
  4. Step 4: Simplify right side
    27,155.08x = 343,597,277.32
  5. Step 5: Solve for x
    x = 343,597,277.32/27,155.08
  6. Step 6: Final answer
    x = 12,653.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.