Home / 38,518.18-57,771.38-12,219.50

Finding the Fourth Proportional to 38,518.18, 57,771.38 and 12,219.50

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Solution

The fourth proportional to 38,518.18, 57,771.38 and 12,219.50 is: 18,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.18 : 57,771.38 = 12,219.50 : x
  2. Step 2: Convert to fraction form
    38,518.18/57,771.38 = 12,219.50/x
  3. Step 3: Cross multiply
    38,518.18x = 57,771.38 × 12,219.50
  4. Step 4: Simplify right side
    38,518.18x = 705,937,377.91
  5. Step 5: Solve for x
    x = 705,937,377.91/38,518.18
  6. Step 6: Final answer
    x = 18,327.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.