Home / 12,431.45-17,155.48-6,766.25

Finding the Fourth Proportional to 12,431.45, 17,155.48 and 6,766.25

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Solution

The fourth proportional to 12,431.45, 17,155.48 and 6,766.25 is: 9,337.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.45 : 17,155.48 = 6,766.25 : x
  2. Step 2: Convert to fraction form
    12,431.45/17,155.48 = 6,766.25/x
  3. Step 3: Cross multiply
    12,431.45x = 17,155.48 × 6,766.25
  4. Step 4: Simplify right side
    12,431.45x = 116,078,266.55
  5. Step 5: Solve for x
    x = 116,078,266.55/12,431.45
  6. Step 6: Final answer
    x = 9,337.47

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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.