Home / 21,036.79-31,549.78-6,242.21

Finding the Fourth Proportional to 21,036.79, 31,549.78 and 6,242.21

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Solution

The fourth proportional to 21,036.79, 31,549.78 and 6,242.21 is: 9,361.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.79 : 31,549.78 = 6,242.21 : x
  2. Step 2: Convert to fraction form
    21,036.79/31,549.78 = 6,242.21/x
  3. Step 3: Cross multiply
    21,036.79x = 31,549.78 × 6,242.21
  4. Step 4: Simplify right side
    21,036.79x = 196,940,352.21
  5. Step 5: Solve for x
    x = 196,940,352.21/21,036.79
  6. Step 6: Final answer
    x = 9,361.71

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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.