Home / 21,139.07-31,713.47-6,348.27

Finding the Fourth Proportional to 21,139.07, 31,713.47 and 6,348.27

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Solution

The fourth proportional to 21,139.07, 31,713.47 and 6,348.27 is: 9,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.07 : 31,713.47 = 6,348.27 : x
  2. Step 2: Convert to fraction form
    21,139.07/31,713.47 = 6,348.27/x
  3. Step 3: Cross multiply
    21,139.07x = 31,713.47 × 6,348.27
  4. Step 4: Simplify right side
    21,139.07x = 201,325,670.20
  5. Step 5: Solve for x
    x = 201,325,670.20/21,139.07
  6. Step 6: Final answer
    x = 9,523.87

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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.