Home / 21,762.76-30,032.22-12,331.12

Finding the Fourth Proportional to 21,762.76, 30,032.22 and 12,331.12

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Solution

The fourth proportional to 21,762.76, 30,032.22 and 12,331.12 is: 17,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.76 : 30,032.22 = 12,331.12 : x
  2. Step 2: Convert to fraction form
    21,762.76/30,032.22 = 12,331.12/x
  3. Step 3: Cross multiply
    21,762.76x = 30,032.22 × 12,331.12
  4. Step 4: Simplify right side
    21,762.76x = 370,330,908.69
  5. Step 5: Solve for x
    x = 370,330,908.69/21,762.76
  6. Step 6: Final answer
    x = 17,016.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.