Home / 12,349.09-18,518.03-5,325.78

Finding the Fourth Proportional to 12,349.09, 18,518.03 and 5,325.78

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Solution

The fourth proportional to 12,349.09, 18,518.03 and 5,325.78 is: 7,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,349.09 : 18,518.03 = 5,325.78 : x
  2. Step 2: Convert to fraction form
    12,349.09/18,518.03 = 5,325.78/x
  3. Step 3: Cross multiply
    12,349.09x = 18,518.03 × 5,325.78
  4. Step 4: Simplify right side
    12,349.09x = 98,622,927.18
  5. Step 5: Solve for x
    x = 98,622,927.18/12,349.09
  6. Step 6: Final answer
    x = 7,986.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.