Home / 20,832.47-28,748.90-11,401.01

Finding the Fourth Proportional to 20,832.47, 28,748.90 and 11,401.01

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Solution

The fourth proportional to 20,832.47, 28,748.90 and 11,401.01 is: 15,733.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.47 : 28,748.90 = 11,401.01 : x
  2. Step 2: Convert to fraction form
    20,832.47/28,748.90 = 11,401.01/x
  3. Step 3: Cross multiply
    20,832.47x = 28,748.90 × 11,401.01
  4. Step 4: Simplify right side
    20,832.47x = 327,766,424.52
  5. Step 5: Solve for x
    x = 327,766,424.52/20,832.47
  6. Step 6: Final answer
    x = 15,733.44

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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.