Home / 13,189.26-18,187.47-11,307.18

Finding the Fourth Proportional to 13,189.26, 18,187.47 and 11,307.18

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Solution

The fourth proportional to 13,189.26, 18,187.47 and 11,307.18 is: 15,592.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.26 : 18,187.47 = 11,307.18 : x
  2. Step 2: Convert to fraction form
    13,189.26/18,187.47 = 11,307.18/x
  3. Step 3: Cross multiply
    13,189.26x = 18,187.47 × 11,307.18
  4. Step 4: Simplify right side
    13,189.26x = 205,648,997.03
  5. Step 5: Solve for x
    x = 205,648,997.03/13,189.26
  6. Step 6: Final answer
    x = 15,592.16

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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.