Home / 21,391.92-29,521.80-11,960.48

Finding the Fourth Proportional to 21,391.92, 29,521.80 and 11,960.48

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Solution

The fourth proportional to 21,391.92, 29,521.80 and 11,960.48 is: 16,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.92 : 29,521.80 = 11,960.48 : x
  2. Step 2: Convert to fraction form
    21,391.92/29,521.80 = 11,960.48/x
  3. Step 3: Cross multiply
    21,391.92x = 29,521.80 × 11,960.48
  4. Step 4: Simplify right side
    21,391.92x = 353,094,972.27
  5. Step 5: Solve for x
    x = 353,094,972.27/21,391.92
  6. Step 6: Final answer
    x = 16,506.00

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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.