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Finding the Fourth Proportional to 12,151.48, 18,160.64 and 8,871.48

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Solution

The fourth proportional to 12,151.48, 18,160.64 and 8,871.48 is: 13,258.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.48 : 18,160.64 = 8,871.48 : x
  2. Step 2: Convert to fraction form
    12,151.48/18,160.64 = 8,871.48/x
  3. Step 3: Cross multiply
    12,151.48x = 18,160.64 × 8,871.48
  4. Step 4: Simplify right side
    12,151.48x = 161,111,710.19
  5. Step 5: Solve for x
    x = 161,111,710.19/12,151.48
  6. Step 6: Final answer
    x = 13,258.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.