Home / 21,134.88-29,165.76-12,751.38

Finding the Fourth Proportional to 21,134.88, 29,165.76 and 12,751.38

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Solution

The fourth proportional to 21,134.88, 29,165.76 and 12,751.38 is: 17,596.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.88 : 29,165.76 = 12,751.38 : x
  2. Step 2: Convert to fraction form
    21,134.88/29,165.76 = 12,751.38/x
  3. Step 3: Cross multiply
    21,134.88x = 29,165.76 × 12,751.38
  4. Step 4: Simplify right side
    21,134.88x = 371,903,688.75
  5. Step 5: Solve for x
    x = 371,903,688.75/21,134.88
  6. Step 6: Final answer
    x = 17,596.68

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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.