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Finding the Fourth Proportional to 20,652.53, 30,978.84 and 19,600.76

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Solution

The fourth proportional to 20,652.53, 30,978.84 and 19,600.76 is: 29,401.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.53 : 30,978.84 = 19,600.76 : x
  2. Step 2: Convert to fraction form
    20,652.53/30,978.84 = 19,600.76/x
  3. Step 3: Cross multiply
    20,652.53x = 30,978.84 × 19,600.76
  4. Step 4: Simplify right side
    20,652.53x = 607,208,807.92
  5. Step 5: Solve for x
    x = 607,208,807.92/20,652.53
  6. Step 6: Final answer
    x = 29,401.18

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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.