Home / 20,085.89-27,717.51-11,133.30

Finding the Fourth Proportional to 20,085.89, 27,717.51 and 11,133.30

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Solution

The fourth proportional to 20,085.89, 27,717.51 and 11,133.30 is: 15,363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.89 : 27,717.51 = 11,133.30 : x
  2. Step 2: Convert to fraction form
    20,085.89/27,717.51 = 11,133.30/x
  3. Step 3: Cross multiply
    20,085.89x = 27,717.51 × 11,133.30
  4. Step 4: Simplify right side
    20,085.89x = 308,587,215.50
  5. Step 5: Solve for x
    x = 308,587,215.50/20,085.89
  6. Step 6: Final answer
    x = 15,363.38

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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.