Home / 15,935.37-21,989.79-9,966.75

Finding the Fourth Proportional to 15,935.37, 21,989.79 and 9,966.75

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Solution

The fourth proportional to 15,935.37, 21,989.79 and 9,966.75 is: 13,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.37 : 21,989.79 = 9,966.75 : x
  2. Step 2: Convert to fraction form
    15,935.37/21,989.79 = 9,966.75/x
  3. Step 3: Cross multiply
    15,935.37x = 21,989.79 × 9,966.75
  4. Step 4: Simplify right side
    15,935.37x = 219,166,739.48
  5. Step 5: Solve for x
    x = 219,166,739.48/15,935.37
  6. Step 6: Final answer
    x = 13,753.48

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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.