Home / 38,438.10-57,662.55-12,140.10

Finding the Fourth Proportional to 38,438.10, 57,662.55 and 12,140.10

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Solution

The fourth proportional to 38,438.10, 57,662.55 and 12,140.10 is: 18,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,438.10 : 57,662.55 = 12,140.10 : x
  2. Step 2: Convert to fraction form
    38,438.10/57,662.55 = 12,140.10/x
  3. Step 3: Cross multiply
    38,438.10x = 57,662.55 × 12,140.10
  4. Step 4: Simplify right side
    38,438.10x = 700,029,123.26
  5. Step 5: Solve for x
    x = 700,029,123.26/38,438.10
  6. Step 6: Final answer
    x = 18,211.86

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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.