Home / 38,438.84-57,658.08-12,143.54

Finding the Fourth Proportional to 38,438.84, 57,658.08 and 12,143.54

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Solution

The fourth proportional to 38,438.84, 57,658.08 and 12,143.54 is: 18,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,438.84 : 57,658.08 = 12,143.54 : x
  2. Step 2: Convert to fraction form
    38,438.84/57,658.08 = 12,143.54/x
  3. Step 3: Cross multiply
    38,438.84x = 57,658.08 × 12,143.54
  4. Step 4: Simplify right side
    38,438.84x = 700,173,390.49
  5. Step 5: Solve for x
    x = 700,173,390.49/38,438.84
  6. Step 6: Final answer
    x = 18,215.26

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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.