Home / 9,345.36-12,896.55-5,153.61

Finding the Fourth Proportional to 9,345.36, 12,896.55 and 5,153.61

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Solution

The fourth proportional to 9,345.36, 12,896.55 and 5,153.61 is: 7,111.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,345.36 : 12,896.55 = 5,153.61 : x
  2. Step 2: Convert to fraction form
    9,345.36/12,896.55 = 5,153.61/x
  3. Step 3: Cross multiply
    9,345.36x = 12,896.55 × 5,153.61
  4. Step 4: Simplify right side
    9,345.36x = 66,463,789.05
  5. Step 5: Solve for x
    x = 66,463,789.05/9,345.36
  6. Step 6: Final answer
    x = 7,111.96

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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.