Home / 20,365.12-30,525.84-13,342.48

Finding the Fourth Proportional to 20,365.12, 30,525.84 and 13,342.48

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Solution

The fourth proportional to 20,365.12, 30,525.84 and 13,342.48 is: 19,999.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.12 : 30,525.84 = 13,342.48 : x
  2. Step 2: Convert to fraction form
    20,365.12/30,525.84 = 13,342.48/x
  3. Step 3: Cross multiply
    20,365.12x = 30,525.84 × 13,342.48
  4. Step 4: Simplify right side
    20,365.12x = 407,290,409.68
  5. Step 5: Solve for x
    x = 407,290,409.68/20,365.12
  6. Step 6: Final answer
    x = 19,999.41

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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.