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Finding the Fourth Proportional to 17,876.79, 26,809.70 and 12,365.55

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Solution

The fourth proportional to 17,876.79, 26,809.70 and 12,365.55 is: 18,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.79 : 26,809.70 = 12,365.55 : x
  2. Step 2: Convert to fraction form
    17,876.79/26,809.70 = 12,365.55/x
  3. Step 3: Cross multiply
    17,876.79x = 26,809.70 × 12,365.55
  4. Step 4: Simplify right side
    17,876.79x = 331,516,624.01
  5. Step 5: Solve for x
    x = 331,516,624.01/17,876.79
  6. Step 6: Final answer
    x = 18,544.53

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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.