Home / 13,126.76-19,709.10-8,697.80

Finding the Fourth Proportional to 13,126.76, 19,709.10 and 8,697.80

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Solution

The fourth proportional to 13,126.76, 19,709.10 and 8,697.80 is: 13,059.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.76 : 19,709.10 = 8,697.80 : x
  2. Step 2: Convert to fraction form
    13,126.76/19,709.10 = 8,697.80/x
  3. Step 3: Cross multiply
    13,126.76x = 19,709.10 × 8,697.80
  4. Step 4: Simplify right side
    13,126.76x = 171,425,809.98
  5. Step 5: Solve for x
    x = 171,425,809.98/13,126.76
  6. Step 6: Final answer
    x = 13,059.26

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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.