Home / 21,391.86-29,516.13-11,960.10

Finding the Fourth Proportional to 21,391.86, 29,516.13 and 11,960.10

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Solution

The fourth proportional to 21,391.86, 29,516.13 and 11,960.10 is: 16,502.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.86 : 29,516.13 = 11,960.10 : x
  2. Step 2: Convert to fraction form
    21,391.86/29,516.13 = 11,960.10/x
  3. Step 3: Cross multiply
    21,391.86x = 29,516.13 × 11,960.10
  4. Step 4: Simplify right side
    21,391.86x = 353,015,866.41
  5. Step 5: Solve for x
    x = 353,015,866.41/21,391.86
  6. Step 6: Final answer
    x = 16,502.35

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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.