Home / 21,246.36-31,871.22-6,456.57

Finding the Fourth Proportional to 21,246.36, 31,871.22 and 6,456.57

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Solution

The fourth proportional to 21,246.36, 31,871.22 and 6,456.57 is: 9,685.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.36 : 31,871.22 = 6,456.57 : x
  2. Step 2: Convert to fraction form
    21,246.36/31,871.22 = 6,456.57/x
  3. Step 3: Cross multiply
    21,246.36x = 31,871.22 × 6,456.57
  4. Step 4: Simplify right side
    21,246.36x = 205,778,762.92
  5. Step 5: Solve for x
    x = 205,778,762.92/21,246.36
  6. Step 6: Final answer
    x = 9,685.37

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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.