Home / 30,378.18-41,920.90-16,579.98

Finding the Fourth Proportional to 30,378.18, 41,920.90 and 16,579.98

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Solution

The fourth proportional to 30,378.18, 41,920.90 and 16,579.98 is: 22,879.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.18 : 41,920.90 = 16,579.98 : x
  2. Step 2: Convert to fraction form
    30,378.18/41,920.90 = 16,579.98/x
  3. Step 3: Cross multiply
    30,378.18x = 41,920.90 × 16,579.98
  4. Step 4: Simplify right side
    30,378.18x = 695,047,683.58
  5. Step 5: Solve for x
    x = 695,047,683.58/30,378.18
  6. Step 6: Final answer
    x = 22,879.83

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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.