Home / 29,420.81-40,600.41-21,900.77

Finding the Fourth Proportional to 29,420.81, 40,600.41 and 21,900.77

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Solution

The fourth proportional to 29,420.81, 40,600.41 and 21,900.77 is: 30,222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,420.81 : 40,600.41 = 21,900.77 : x
  2. Step 2: Convert to fraction form
    29,420.81/40,600.41 = 21,900.77/x
  3. Step 3: Cross multiply
    29,420.81x = 40,600.41 × 21,900.77
  4. Step 4: Simplify right side
    29,420.81x = 889,180,241.32
  5. Step 5: Solve for x
    x = 889,180,241.32/29,420.81
  6. Step 6: Final answer
    x = 30,222.83

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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.