Home / 23,999.96-33,120-13,390.31

Finding the Fourth Proportional to 23,999.96, 33,120 and 13,390.31

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Solution

The fourth proportional to 23,999.96, 33,120 and 13,390.31 is: 18,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,999.96 : 33,120 = 13,390.31 : x
  2. Step 2: Convert to fraction form
    23,999.96/33,120 = 13,390.31/x
  3. Step 3: Cross multiply
    23,999.96x = 33,120 × 13,390.31
  4. Step 4: Simplify right side
    23,999.96x = 443,486,901.60
  5. Step 5: Solve for x
    x = 443,486,901.60/23,999.96
  6. Step 6: Final answer
    x = 18,478.66

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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.