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Finding the Fourth Proportional to 18,769, 25,901.22 and 10,386.76

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Solution

The fourth proportional to 18,769, 25,901.22 and 10,386.76 is: 14,333.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769 : 25,901.22 = 10,386.76 : x
  2. Step 2: Convert to fraction form
    18,769/25,901.22 = 10,386.76/x
  3. Step 3: Cross multiply
    18,769x = 25,901.22 × 10,386.76
  4. Step 4: Simplify right side
    18,769x = 269,029,755.85
  5. Step 5: Solve for x
    x = 269,029,755.85/18,769
  6. Step 6: Final answer
    x = 14,333.73

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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.