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Finding the Fourth Proportional to 17,420.47, 26,135.05 and 5,108.47

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Solution

The fourth proportional to 17,420.47, 26,135.05 and 5,108.47 is: 7,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.47 : 26,135.05 = 5,108.47 : x
  2. Step 2: Convert to fraction form
    17,420.47/26,135.05 = 5,108.47/x
  3. Step 3: Cross multiply
    17,420.47x = 26,135.05 × 5,108.47
  4. Step 4: Simplify right side
    17,420.47x = 133,510,093.33
  5. Step 5: Solve for x
    x = 133,510,093.33/17,420.47
  6. Step 6: Final answer
    x = 7,663.98

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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.