Home / 21,389.42-29,516.91-11,958.86

Finding the Fourth Proportional to 21,389.42, 29,516.91 and 11,958.86

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Solution

The fourth proportional to 21,389.42, 29,516.91 and 11,958.86 is: 16,502.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.42 : 29,516.91 = 11,958.86 : x
  2. Step 2: Convert to fraction form
    21,389.42/29,516.91 = 11,958.86/x
  3. Step 3: Cross multiply
    21,389.42x = 29,516.91 × 11,958.86
  4. Step 4: Simplify right side
    21,389.42x = 352,988,594.32
  5. Step 5: Solve for x
    x = 352,988,594.32/21,389.42
  6. Step 6: Final answer
    x = 16,502.95

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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.