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Finding the Fourth Proportional to 12,373.80, 18,628.17 and 11,285.16

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Solution

The fourth proportional to 12,373.80, 18,628.17 and 11,285.16 is: 16,989.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,373.80 : 18,628.17 = 11,285.16 : x
  2. Step 2: Convert to fraction form
    12,373.80/18,628.17 = 11,285.16/x
  3. Step 3: Cross multiply
    12,373.80x = 18,628.17 × 11,285.16
  4. Step 4: Simplify right side
    12,373.80x = 210,221,878.96
  5. Step 5: Solve for x
    x = 210,221,878.96/12,373.80
  6. Step 6: Final answer
    x = 16,989.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.