Home / 13,121.76-19,663.20-10,798.28

Finding the Fourth Proportional to 13,121.76, 19,663.20 and 10,798.28

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Solution

The fourth proportional to 13,121.76, 19,663.20 and 10,798.28 is: 16,181.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.76 : 19,663.20 = 10,798.28 : x
  2. Step 2: Convert to fraction form
    13,121.76/19,663.20 = 10,798.28/x
  3. Step 3: Cross multiply
    13,121.76x = 19,663.20 × 10,798.28
  4. Step 4: Simplify right side
    13,121.76x = 212,328,640.98
  5. Step 5: Solve for x
    x = 212,328,640.98/13,121.76
  6. Step 6: Final answer
    x = 16,181.41

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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.