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Finding the Fourth Proportional to 18,846.81, 25,985.75 and 16,289.96

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Solution

The fourth proportional to 18,846.81, 25,985.75 and 16,289.96 is: 22,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.81 : 25,985.75 = 16,289.96 : x
  2. Step 2: Convert to fraction form
    18,846.81/25,985.75 = 16,289.96/x
  3. Step 3: Cross multiply
    18,846.81x = 25,985.75 × 16,289.96
  4. Step 4: Simplify right side
    18,846.81x = 423,306,616.69
  5. Step 5: Solve for x
    x = 423,306,616.69/18,846.81
  6. Step 6: Final answer
    x = 22,460.39

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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.