Home / 21,240.36-31,860.50-6,247.46

Finding the Fourth Proportional to 21,240.36, 31,860.50 and 6,247.46

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Solution

The fourth proportional to 21,240.36, 31,860.50 and 6,247.46 is: 9,371.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.36 : 31,860.50 = 6,247.46 : x
  2. Step 2: Convert to fraction form
    21,240.36/31,860.50 = 6,247.46/x
  3. Step 3: Cross multiply
    21,240.36x = 31,860.50 × 6,247.46
  4. Step 4: Simplify right side
    21,240.36x = 199,047,199.33
  5. Step 5: Solve for x
    x = 199,047,199.33/21,240.36
  6. Step 6: Final answer
    x = 9,371.18

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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.