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Finding the Fourth Proportional to 17,495.78, 26,221.79 and 13,783.34

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Solution

The fourth proportional to 17,495.78, 26,221.79 and 13,783.34 is: 20,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,495.78 : 26,221.79 = 13,783.34 : x
  2. Step 2: Convert to fraction form
    17,495.78/26,221.79 = 13,783.34/x
  3. Step 3: Cross multiply
    17,495.78x = 26,221.79 × 13,783.34
  4. Step 4: Simplify right side
    17,495.78x = 361,423,946.99
  5. Step 5: Solve for x
    x = 361,423,946.99/17,495.78
  6. Step 6: Final answer
    x = 20,657.78

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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.