Home / 9,438.35-13,038.20-8,940.12

Finding the Fourth Proportional to 9,438.35, 13,038.20 and 8,940.12

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Solution

The fourth proportional to 9,438.35, 13,038.20 and 8,940.12 is: 12,349.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,438.35 : 13,038.20 = 8,940.12 : x
  2. Step 2: Convert to fraction form
    9,438.35/13,038.20 = 8,940.12/x
  3. Step 3: Cross multiply
    9,438.35x = 13,038.20 × 8,940.12
  4. Step 4: Simplify right side
    9,438.35x = 116,563,027.88
  5. Step 5: Solve for x
    x = 116,563,027.88/9,438.35
  6. Step 6: Final answer
    x = 12,349.94

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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.