Home / 13,680.06-20,497.77-10,388.94

Finding the Fourth Proportional to 13,680.06, 20,497.77 and 10,388.94

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Solution

The fourth proportional to 13,680.06, 20,497.77 and 10,388.94 is: 15,566.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.06 : 20,497.77 = 10,388.94 : x
  2. Step 2: Convert to fraction form
    13,680.06/20,497.77 = 10,388.94/x
  3. Step 3: Cross multiply
    13,680.06x = 20,497.77 × 10,388.94
  4. Step 4: Simplify right side
    13,680.06x = 212,950,102.66
  5. Step 5: Solve for x
    x = 212,950,102.66/13,680.06
  6. Step 6: Final answer
    x = 15,566.46

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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.