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Finding the Fourth Proportional to 12,505.16, 17,256.99 and 6,839.85

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Solution

The fourth proportional to 12,505.16, 17,256.99 and 6,839.85 is: 9,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.16 : 17,256.99 = 6,839.85 : x
  2. Step 2: Convert to fraction form
    12,505.16/17,256.99 = 6,839.85/x
  3. Step 3: Cross multiply
    12,505.16x = 17,256.99 × 6,839.85
  4. Step 4: Simplify right side
    12,505.16x = 118,035,223.05
  5. Step 5: Solve for x
    x = 118,035,223.05/12,505.16
  6. Step 6: Final answer
    x = 9,438.93

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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.