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Finding the Fourth Proportional to 17,420.89, 26,131.34 and 7,559.95

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Solution

The fourth proportional to 17,420.89, 26,131.34 and 7,559.95 is: 11,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.89 : 26,131.34 = 7,559.95 : x
  2. Step 2: Convert to fraction form
    17,420.89/26,131.34 = 7,559.95/x
  3. Step 3: Cross multiply
    17,420.89x = 26,131.34 × 7,559.95
  4. Step 4: Simplify right side
    17,420.89x = 197,551,710.22
  5. Step 5: Solve for x
    x = 197,551,710.22/17,420.89
  6. Step 6: Final answer
    x = 11,339.93

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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.