Home / 30,921.54-42,671.43-16,774.44

Finding the Fourth Proportional to 30,921.54, 42,671.43 and 16,774.44

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Solution

The fourth proportional to 30,921.54, 42,671.43 and 16,774.44 is: 23,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.54 : 42,671.43 = 16,774.44 : x
  2. Step 2: Convert to fraction form
    30,921.54/42,671.43 = 16,774.44/x
  3. Step 3: Cross multiply
    30,921.54x = 42,671.43 × 16,774.44
  4. Step 4: Simplify right side
    30,921.54x = 715,789,342.25
  5. Step 5: Solve for x
    x = 715,789,342.25/30,921.54
  6. Step 6: Final answer
    x = 23,148.57

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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.