Home / 13,889.06-19,166.89-7,840.58

Finding the Fourth Proportional to 13,889.06, 19,166.89 and 7,840.58

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Solution

The fourth proportional to 13,889.06, 19,166.89 and 7,840.58 is: 10,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.06 : 19,166.89 = 7,840.58 : x
  2. Step 2: Convert to fraction form
    13,889.06/19,166.89 = 7,840.58/x
  3. Step 3: Cross multiply
    13,889.06x = 19,166.89 × 7,840.58
  4. Step 4: Simplify right side
    13,889.06x = 150,279,399.36
  5. Step 5: Solve for x
    x = 150,279,399.36/13,889.06
  6. Step 6: Final answer
    x = 10,819.98

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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.