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Finding the Fourth Proportional to 17,903.52, 26,859.70 and 12,648.84

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Solution

The fourth proportional to 17,903.52, 26,859.70 and 12,648.84 is: 18,976.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,903.52 : 26,859.70 = 12,648.84 : x
  2. Step 2: Convert to fraction form
    17,903.52/26,859.70 = 12,648.84/x
  3. Step 3: Cross multiply
    17,903.52x = 26,859.70 × 12,648.84
  4. Step 4: Simplify right side
    17,903.52x = 339,744,047.75
  5. Step 5: Solve for x
    x = 339,744,047.75/17,903.52
  6. Step 6: Final answer
    x = 18,976.38

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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.