Home / 21,138.07-31,711.97-6,347.27

Finding the Fourth Proportional to 21,138.07, 31,711.97 and 6,347.27

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Solution

The fourth proportional to 21,138.07, 31,711.97 and 6,347.27 is: 9,522.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138.07 : 31,711.97 = 6,347.27 : x
  2. Step 2: Convert to fraction form
    21,138.07/31,711.97 = 6,347.27/x
  3. Step 3: Cross multiply
    21,138.07x = 31,711.97 × 6,347.27
  4. Step 4: Simplify right side
    21,138.07x = 201,284,415.00
  5. Step 5: Solve for x
    x = 201,284,415.00/21,138.07
  6. Step 6: Final answer
    x = 9,522.36

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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.