Home / 30,920.58-42,670.53-16,774.74

Finding the Fourth Proportional to 30,920.58, 42,670.53 and 16,774.74

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Solution

The fourth proportional to 30,920.58, 42,670.53 and 16,774.74 is: 23,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.58 : 42,670.53 = 16,774.74 : x
  2. Step 2: Convert to fraction form
    30,920.58/42,670.53 = 16,774.74/x
  3. Step 3: Cross multiply
    30,920.58x = 42,670.53 × 16,774.74
  4. Step 4: Simplify right side
    30,920.58x = 715,787,046.41
  5. Step 5: Solve for x
    x = 715,787,046.41/30,920.58
  6. Step 6: Final answer
    x = 23,149.21

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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.