Home / 21,268.17-31,903.56-6,478.11

Finding the Fourth Proportional to 21,268.17, 31,903.56 and 6,478.11

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Solution

The fourth proportional to 21,268.17, 31,903.56 and 6,478.11 is: 9,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.17 : 31,903.56 = 6,478.11 : x
  2. Step 2: Convert to fraction form
    21,268.17/31,903.56 = 6,478.11/x
  3. Step 3: Cross multiply
    21,268.17x = 31,903.56 × 6,478.11
  4. Step 4: Simplify right side
    21,268.17x = 206,674,771.07
  5. Step 5: Solve for x
    x = 206,674,771.07/21,268.17
  6. Step 6: Final answer
    x = 9,717.56

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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.