Home / 13,929.99-20,750.21-13,175.46

Finding the Fourth Proportional to 13,929.99, 20,750.21 and 13,175.46

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Solution

The fourth proportional to 13,929.99, 20,750.21 and 13,175.46 is: 19,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.99 : 20,750.21 = 13,175.46 : x
  2. Step 2: Convert to fraction form
    13,929.99/20,750.21 = 13,175.46/x
  3. Step 3: Cross multiply
    13,929.99x = 20,750.21 × 13,175.46
  4. Step 4: Simplify right side
    13,929.99x = 273,393,495.97
  5. Step 5: Solve for x
    x = 273,393,495.97/13,929.99
  6. Step 6: Final answer
    x = 19,626.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.