Home / 30,431.75-42,049.47-23,418.77

Finding the Fourth Proportional to 30,431.75, 42,049.47 and 23,418.77

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Solution

The fourth proportional to 30,431.75, 42,049.47 and 23,418.77 is: 32,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.75 : 42,049.47 = 23,418.77 : x
  2. Step 2: Convert to fraction form
    30,431.75/42,049.47 = 23,418.77/x
  3. Step 3: Cross multiply
    30,431.75x = 42,049.47 × 23,418.77
  4. Step 4: Simplify right side
    30,431.75x = 984,746,656.30
  5. Step 5: Solve for x
    x = 984,746,656.30/30,431.75
  6. Step 6: Final answer
    x = 32,359.19

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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.