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Finding the Fourth Proportional to 11,480.72, 15,848.64 and 8,827.20

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Solution

The fourth proportional to 11,480.72, 15,848.64 and 8,827.20 is: 12,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,480.72 : 15,848.64 = 8,827.20 : x
  2. Step 2: Convert to fraction form
    11,480.72/15,848.64 = 8,827.20/x
  3. Step 3: Cross multiply
    11,480.72x = 15,848.64 × 8,827.20
  4. Step 4: Simplify right side
    11,480.72x = 139,899,115.01
  5. Step 5: Solve for x
    x = 139,899,115.01/11,480.72
  6. Step 6: Final answer
    x = 12,185.57

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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.