Home / 11,812.31-16,285.79-9,680.03

Finding the Fourth Proportional to 11,812.31, 16,285.79 and 9,680.03

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Solution

The fourth proportional to 11,812.31, 16,285.79 and 9,680.03 is: 13,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,812.31 : 16,285.79 = 9,680.03 : x
  2. Step 2: Convert to fraction form
    11,812.31/16,285.79 = 9,680.03/x
  3. Step 3: Cross multiply
    11,812.31x = 16,285.79 × 9,680.03
  4. Step 4: Simplify right side
    11,812.31x = 157,646,887.37
  5. Step 5: Solve for x
    x = 157,646,887.37/11,812.31
  6. Step 6: Final answer
    x = 13,345.98

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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.