Home / 13,708.33-18,899.90-11,243.57

Finding the Fourth Proportional to 13,708.33, 18,899.90 and 11,243.57

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Solution

The fourth proportional to 13,708.33, 18,899.90 and 11,243.57 is: 15,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.33 : 18,899.90 = 11,243.57 : x
  2. Step 2: Convert to fraction form
    13,708.33/18,899.90 = 11,243.57/x
  3. Step 3: Cross multiply
    13,708.33x = 18,899.90 × 11,243.57
  4. Step 4: Simplify right side
    13,708.33x = 212,502,240.09
  5. Step 5: Solve for x
    x = 212,502,240.09/13,708.33
  6. Step 6: Final answer
    x = 15,501.69

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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.