Home / 12,458.08-17,190.40-7,152

Finding the Fourth Proportional to 12,458.08, 17,190.40 and 7,152

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Solution

The fourth proportional to 12,458.08, 17,190.40 and 7,152 is: 9,868.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.08 : 17,190.40 = 7,152 : x
  2. Step 2: Convert to fraction form
    12,458.08/17,190.40 = 7,152/x
  3. Step 3: Cross multiply
    12,458.08x = 17,190.40 × 7,152
  4. Step 4: Simplify right side
    12,458.08x = 122,945,740.80
  5. Step 5: Solve for x
    x = 122,945,740.80/12,458.08
  6. Step 6: Final answer
    x = 9,868.76

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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.