Home / 9,505.89-13,121.73-8,509.37

Finding the Fourth Proportional to 9,505.89, 13,121.73 and 8,509.37

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Solution

The fourth proportional to 9,505.89, 13,121.73 and 8,509.37 is: 11,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,505.89 : 13,121.73 = 8,509.37 : x
  2. Step 2: Convert to fraction form
    9,505.89/13,121.73 = 8,509.37/x
  3. Step 3: Cross multiply
    9,505.89x = 13,121.73 × 8,509.37
  4. Step 4: Simplify right side
    9,505.89x = 111,657,590.00
  5. Step 5: Solve for x
    x = 111,657,590.00/9,505.89
  6. Step 6: Final answer
    x = 11,746.15

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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.