Home / 30,629.28-42,137.18-29,317.08

Finding the Fourth Proportional to 30,629.28, 42,137.18 and 29,317.08

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Solution

The fourth proportional to 30,629.28, 42,137.18 and 29,317.08 is: 40,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.28 : 42,137.18 = 29,317.08 : x
  2. Step 2: Convert to fraction form
    30,629.28/42,137.18 = 29,317.08/x
  3. Step 3: Cross multiply
    30,629.28x = 42,137.18 × 29,317.08
  4. Step 4: Simplify right side
    30,629.28x = 1,235,339,077.03
  5. Step 5: Solve for x
    x = 1,235,339,077.03/30,629.28
  6. Step 6: Final answer
    x = 40,331.97

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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.