Home / 12,126.26-16,728.59-7,877.02

Finding the Fourth Proportional to 12,126.26, 16,728.59 and 7,877.02

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Solution

The fourth proportional to 12,126.26, 16,728.59 and 7,877.02 is: 10,866.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.26 : 16,728.59 = 7,877.02 : x
  2. Step 2: Convert to fraction form
    12,126.26/16,728.59 = 7,877.02/x
  3. Step 3: Cross multiply
    12,126.26x = 16,728.59 × 7,877.02
  4. Step 4: Simplify right side
    12,126.26x = 131,771,438.00
  5. Step 5: Solve for x
    x = 131,771,438.00/12,126.26
  6. Step 6: Final answer
    x = 10,866.62

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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.