Home / 9,912.15-13,678.77-5,435.97

Finding the Fourth Proportional to 9,912.15, 13,678.77 and 5,435.97

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Solution

The fourth proportional to 9,912.15, 13,678.77 and 5,435.97 is: 7,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.15 : 13,678.77 = 5,435.97 : x
  2. Step 2: Convert to fraction form
    9,912.15/13,678.77 = 5,435.97/x
  3. Step 3: Cross multiply
    9,912.15x = 13,678.77 × 5,435.97
  4. Step 4: Simplify right side
    9,912.15x = 74,357,383.36
  5. Step 5: Solve for x
    x = 74,357,383.36/9,912.15
  6. Step 6: Final answer
    x = 7,501.64

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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.