Home / 30,697.21-42,259.77-29,286.58

Finding the Fourth Proportional to 30,697.21, 42,259.77 and 29,286.58

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Solution

The fourth proportional to 30,697.21, 42,259.77 and 29,286.58 is: 40,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.21 : 42,259.77 = 29,286.58 : x
  2. Step 2: Convert to fraction form
    30,697.21/42,259.77 = 29,286.58/x
  3. Step 3: Cross multiply
    30,697.21x = 42,259.77 × 29,286.58
  4. Step 4: Simplify right side
    30,697.21x = 1,237,644,134.89
  5. Step 5: Solve for x
    x = 1,237,644,134.89/30,697.21
  6. Step 6: Final answer
    x = 40,317.81

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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.