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Finding the Fourth Proportional to 18,888.92, 26,064.34 and 12,769.94

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Solution

The fourth proportional to 18,888.92, 26,064.34 and 12,769.94 is: 17,620.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.92 : 26,064.34 = 12,769.94 : x
  2. Step 2: Convert to fraction form
    18,888.92/26,064.34 = 12,769.94/x
  3. Step 3: Cross multiply
    18,888.92x = 26,064.34 × 12,769.94
  4. Step 4: Simplify right side
    18,888.92x = 332,840,057.94
  5. Step 5: Solve for x
    x = 332,840,057.94/18,888.92
  6. Step 6: Final answer
    x = 17,620.92

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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.