Home / 21,130.97-31,693.93-5,549.81

Finding the Fourth Proportional to 21,130.97, 31,693.93 and 5,549.81

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Solution

The fourth proportional to 21,130.97, 31,693.93 and 5,549.81 is: 8,324.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.97 : 31,693.93 = 5,549.81 : x
  2. Step 2: Convert to fraction form
    21,130.97/31,693.93 = 5,549.81/x
  3. Step 3: Cross multiply
    21,130.97x = 31,693.93 × 5,549.81
  4. Step 4: Simplify right side
    21,130.97x = 175,895,117.31
  5. Step 5: Solve for x
    x = 175,895,117.31/21,130.97
  6. Step 6: Final answer
    x = 8,324.05

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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.