Home / 12,938.93-19,408.24-9,123.86

Finding the Fourth Proportional to 12,938.93, 19,408.24 and 9,123.86

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Solution

The fourth proportional to 12,938.93, 19,408.24 and 9,123.86 is: 13,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.93 : 19,408.24 = 9,123.86 : x
  2. Step 2: Convert to fraction form
    12,938.93/19,408.24 = 9,123.86/x
  3. Step 3: Cross multiply
    12,938.93x = 19,408.24 × 9,123.86
  4. Step 4: Simplify right side
    12,938.93x = 177,077,921.95
  5. Step 5: Solve for x
    x = 177,077,921.95/12,938.93
  6. Step 6: Final answer
    x = 13,685.67

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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.