Home / 13,753.37-18,979.93-7,785.03

Finding the Fourth Proportional to 13,753.37, 18,979.93 and 7,785.03

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Solution

The fourth proportional to 13,753.37, 18,979.93 and 7,785.03 is: 10,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.37 : 18,979.93 = 7,785.03 : x
  2. Step 2: Convert to fraction form
    13,753.37/18,979.93 = 7,785.03/x
  3. Step 3: Cross multiply
    13,753.37x = 18,979.93 × 7,785.03
  4. Step 4: Simplify right side
    13,753.37x = 147,759,324.45
  5. Step 5: Solve for x
    x = 147,759,324.45/13,753.37
  6. Step 6: Final answer
    x = 10,743.50

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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.