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Finding the Fourth Proportional to 17,503.78, 26,221.65 and 15,540.34

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Solution

The fourth proportional to 17,503.78, 26,221.65 and 15,540.34 is: 23,280.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,503.78 : 26,221.65 = 15,540.34 : x
  2. Step 2: Convert to fraction form
    17,503.78/26,221.65 = 15,540.34/x
  3. Step 3: Cross multiply
    17,503.78x = 26,221.65 × 15,540.34
  4. Step 4: Simplify right side
    17,503.78x = 407,493,356.36
  5. Step 5: Solve for x
    x = 407,493,356.36/17,503.78
  6. Step 6: Final answer
    x = 23,280.31

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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.