Home / 30,840.21-42,561.42-17,406.57

Finding the Fourth Proportional to 30,840.21, 42,561.42 and 17,406.57

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Solution

The fourth proportional to 30,840.21, 42,561.42 and 17,406.57 is: 24,022.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.21 : 42,561.42 = 17,406.57 : x
  2. Step 2: Convert to fraction form
    30,840.21/42,561.42 = 17,406.57/x
  3. Step 3: Cross multiply
    30,840.21x = 42,561.42 × 17,406.57
  4. Step 4: Simplify right side
    30,840.21x = 740,848,336.53
  5. Step 5: Solve for x
    x = 740,848,336.53/30,840.21
  6. Step 6: Final answer
    x = 24,022.16

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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.