Home / 20,525.06-28,329.11-13,342.48

Finding the Fourth Proportional to 20,525.06, 28,329.11 and 13,342.48

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Solution

The fourth proportional to 20,525.06, 28,329.11 and 13,342.48 is: 18,415.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.06 : 28,329.11 = 13,342.48 : x
  2. Step 2: Convert to fraction form
    20,525.06/28,329.11 = 13,342.48/x
  3. Step 3: Cross multiply
    20,525.06x = 28,329.11 × 13,342.48
  4. Step 4: Simplify right side
    20,525.06x = 377,980,583.59
  5. Step 5: Solve for x
    x = 377,980,583.59/20,525.06
  6. Step 6: Final answer
    x = 18,415.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.