Home / 23,213.48-31,961.75-20,485.19

Finding the Fourth Proportional to 23,213.48, 31,961.75 and 20,485.19

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Solution

The fourth proportional to 23,213.48, 31,961.75 and 20,485.19 is: 28,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,213.48 : 31,961.75 = 20,485.19 : x
  2. Step 2: Convert to fraction form
    23,213.48/31,961.75 = 20,485.19/x
  3. Step 3: Cross multiply
    23,213.48x = 31,961.75 × 20,485.19
  4. Step 4: Simplify right side
    23,213.48x = 654,742,498.96
  5. Step 5: Solve for x
    x = 654,742,498.96/23,213.48
  6. Step 6: Final answer
    x = 28,205.28

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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.