Home / 10,918.02-15,054.03-9,129.54

Finding the Fourth Proportional to 10,918.02, 15,054.03 and 9,129.54

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Solution

The fourth proportional to 10,918.02, 15,054.03 and 9,129.54 is: 12,588.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.02 : 15,054.03 = 9,129.54 : x
  2. Step 2: Convert to fraction form
    10,918.02/15,054.03 = 9,129.54/x
  3. Step 3: Cross multiply
    10,918.02x = 15,054.03 × 9,129.54
  4. Step 4: Simplify right side
    10,918.02x = 137,436,369.05
  5. Step 5: Solve for x
    x = 137,436,369.05/10,918.02
  6. Step 6: Final answer
    x = 12,588.03

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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.