Home / 21,337.11-29,440.17-12,383.07

Finding the Fourth Proportional to 21,337.11, 29,440.17 and 12,383.07

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Solution

The fourth proportional to 21,337.11, 29,440.17 and 12,383.07 is: 17,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.11 : 29,440.17 = 12,383.07 : x
  2. Step 2: Convert to fraction form
    21,337.11/29,440.17 = 12,383.07/x
  3. Step 3: Cross multiply
    21,337.11x = 29,440.17 × 12,383.07
  4. Step 4: Simplify right side
    21,337.11x = 364,559,685.92
  5. Step 5: Solve for x
    x = 364,559,685.92/21,337.11
  6. Step 6: Final answer
    x = 17,085.71

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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.