Home / 31,173.48-43,002.90-21,088.44

Finding the Fourth Proportional to 31,173.48, 43,002.90 and 21,088.44

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Solution

The fourth proportional to 31,173.48, 43,002.90 and 21,088.44 is: 29,090.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,173.48 : 43,002.90 = 21,088.44 : x
  2. Step 2: Convert to fraction form
    31,173.48/43,002.90 = 21,088.44/x
  3. Step 3: Cross multiply
    31,173.48x = 43,002.90 × 21,088.44
  4. Step 4: Simplify right side
    31,173.48x = 906,864,076.48
  5. Step 5: Solve for x
    x = 906,864,076.48/31,173.48
  6. Step 6: Final answer
    x = 29,090.88

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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.