Home / 23,205.72-31,999.68-13,772.46

Finding the Fourth Proportional to 23,205.72, 31,999.68 and 13,772.46

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Solution

The fourth proportional to 23,205.72, 31,999.68 and 13,772.46 is: 18,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,205.72 : 31,999.68 = 13,772.46 : x
  2. Step 2: Convert to fraction form
    23,205.72/31,999.68 = 13,772.46/x
  3. Step 3: Cross multiply
    23,205.72x = 31,999.68 × 13,772.46
  4. Step 4: Simplify right side
    23,205.72x = 440,714,312.81
  5. Step 5: Solve for x
    x = 440,714,312.81/23,205.72
  6. Step 6: Final answer
    x = 18,991.62

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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.