Home / 21,105.86-29,125.59-11,674.22

Finding the Fourth Proportional to 21,105.86, 29,125.59 and 11,674.22

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Solution

The fourth proportional to 21,105.86, 29,125.59 and 11,674.22 is: 16,110.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.86 : 29,125.59 = 11,674.22 : x
  2. Step 2: Convert to fraction form
    21,105.86/29,125.59 = 11,674.22/x
  3. Step 3: Cross multiply
    21,105.86x = 29,125.59 × 11,674.22
  4. Step 4: Simplify right side
    21,105.86x = 340,018,545.29
  5. Step 5: Solve for x
    x = 340,018,545.29/21,105.86
  6. Step 6: Final answer
    x = 16,110.15

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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.