Home / 21,105.32-29,125.37-11,673.88

Finding the Fourth Proportional to 21,105.32, 29,125.37 and 11,673.88

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Solution

The fourth proportional to 21,105.32, 29,125.37 and 11,673.88 is: 16,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.32 : 29,125.37 = 11,673.88 : x
  2. Step 2: Convert to fraction form
    21,105.32/29,125.37 = 11,673.88/x
  3. Step 3: Cross multiply
    21,105.32x = 29,125.37 × 11,673.88
  4. Step 4: Simplify right side
    21,105.32x = 340,006,030.71
  5. Step 5: Solve for x
    x = 340,006,030.71/21,105.32
  6. Step 6: Final answer
    x = 16,109.97

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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.