Home / 13,130.03-18,122.36-8,349.05

Finding the Fourth Proportional to 13,130.03, 18,122.36 and 8,349.05

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Solution

The fourth proportional to 13,130.03, 18,122.36 and 8,349.05 is: 11,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.03 : 18,122.36 = 8,349.05 : x
  2. Step 2: Convert to fraction form
    13,130.03/18,122.36 = 8,349.05/x
  3. Step 3: Cross multiply
    13,130.03x = 18,122.36 × 8,349.05
  4. Step 4: Simplify right side
    13,130.03x = 151,304,357.40
  5. Step 5: Solve for x
    x = 151,304,357.40/13,130.03
  6. Step 6: Final answer
    x = 11,523.54

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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.