Home / 20,673.17-31,009.75-5,090.79

Finding the Fourth Proportional to 20,673.17, 31,009.75 and 5,090.79

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Solution

The fourth proportional to 20,673.17, 31,009.75 and 5,090.79 is: 7,636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.17 : 31,009.75 = 5,090.79 : x
  2. Step 2: Convert to fraction form
    20,673.17/31,009.75 = 5,090.79/x
  3. Step 3: Cross multiply
    20,673.17x = 31,009.75 × 5,090.79
  4. Step 4: Simplify right side
    20,673.17x = 157,864,125.20
  5. Step 5: Solve for x
    x = 157,864,125.20/20,673.17
  6. Step 6: Final answer
    x = 7,636.18

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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.