Home / 21,240.99-29,313.31-11,681.27

Finding the Fourth Proportional to 21,240.99, 29,313.31 and 11,681.27

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Solution

The fourth proportional to 21,240.99, 29,313.31 and 11,681.27 is: 16,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.99 : 29,313.31 = 11,681.27 : x
  2. Step 2: Convert to fraction form
    21,240.99/29,313.31 = 11,681.27/x
  3. Step 3: Cross multiply
    21,240.99x = 29,313.31 × 11,681.27
  4. Step 4: Simplify right side
    21,240.99x = 342,416,512.93
  5. Step 5: Solve for x
    x = 342,416,512.93/21,240.99
  6. Step 6: Final answer
    x = 16,120.55

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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.