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Finding the Fourth Proportional to 18,609, 25,673.12 and 10,646.96

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Solution

The fourth proportional to 18,609, 25,673.12 and 10,646.96 is: 14,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609 : 25,673.12 = 10,646.96 : x
  2. Step 2: Convert to fraction form
    18,609/25,673.12 = 10,646.96/x
  3. Step 3: Cross multiply
    18,609x = 25,673.12 × 10,646.96
  4. Step 4: Simplify right side
    18,609x = 273,340,681.72
  5. Step 5: Solve for x
    x = 273,340,681.72/18,609
  6. Step 6: Final answer
    x = 14,688.63

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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.