Home / 21,905.38-32,881.46-9,431.58

Finding the Fourth Proportional to 21,905.38, 32,881.46 and 9,431.58

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Solution

The fourth proportional to 21,905.38, 32,881.46 and 9,431.58 is: 14,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.38 : 32,881.46 = 9,431.58 : x
  2. Step 2: Convert to fraction form
    21,905.38/32,881.46 = 9,431.58/x
  3. Step 3: Cross multiply
    21,905.38x = 32,881.46 × 9,431.58
  4. Step 4: Simplify right side
    21,905.38x = 310,124,120.51
  5. Step 5: Solve for x
    x = 310,124,120.51/21,905.38
  6. Step 6: Final answer
    x = 14,157.44

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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.