Home / 31,448.22-43,416.46-20,852.18

Finding the Fourth Proportional to 31,448.22, 43,416.46 and 20,852.18

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Solution

The fourth proportional to 31,448.22, 43,416.46 and 20,852.18 is: 28,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.22 : 43,416.46 = 20,852.18 : x
  2. Step 2: Convert to fraction form
    31,448.22/43,416.46 = 20,852.18/x
  3. Step 3: Cross multiply
    31,448.22x = 43,416.46 × 20,852.18
  4. Step 4: Simplify right side
    31,448.22x = 905,327,838.88
  5. Step 5: Solve for x
    x = 905,327,838.88/31,448.22
  6. Step 6: Final answer
    x = 28,787.89

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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.