Home / 30,490.84-42,074.40-17,745.71

Finding the Fourth Proportional to 30,490.84, 42,074.40 and 17,745.71

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Solution

The fourth proportional to 30,490.84, 42,074.40 and 17,745.71 is: 24,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,490.84 : 42,074.40 = 17,745.71 : x
  2. Step 2: Convert to fraction form
    30,490.84/42,074.40 = 17,745.71/x
  3. Step 3: Cross multiply
    30,490.84x = 42,074.40 × 17,745.71
  4. Step 4: Simplify right side
    30,490.84x = 746,640,266.72
  5. Step 5: Solve for x
    x = 746,640,266.72/30,490.84
  6. Step 6: Final answer
    x = 24,487.36

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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.