Home / 21,079.36-31,623.60-11,217.19

Finding the Fourth Proportional to 21,079.36, 31,623.60 and 11,217.19

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Solution

The fourth proportional to 21,079.36, 31,623.60 and 11,217.19 is: 16,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.36 : 31,623.60 = 11,217.19 : x
  2. Step 2: Convert to fraction form
    21,079.36/31,623.60 = 11,217.19/x
  3. Step 3: Cross multiply
    21,079.36x = 31,623.60 × 11,217.19
  4. Step 4: Simplify right side
    21,079.36x = 354,727,929.68
  5. Step 5: Solve for x
    x = 354,727,929.68/21,079.36
  6. Step 6: Final answer
    x = 16,828.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.