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Finding the Fourth Proportional to 20,401.53, 30,603.06 and 5,610.48

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Solution

The fourth proportional to 20,401.53, 30,603.06 and 5,610.48 is: 8,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.53 : 30,603.06 = 5,610.48 : x
  2. Step 2: Convert to fraction form
    20,401.53/30,603.06 = 5,610.48/x
  3. Step 3: Cross multiply
    20,401.53x = 30,603.06 × 5,610.48
  4. Step 4: Simplify right side
    20,401.53x = 171,697,856.07
  5. Step 5: Solve for x
    x = 171,697,856.07/20,401.53
  6. Step 6: Final answer
    x = 8,415.93

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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.