Home / 13,578.90-18,739.35-7,610.37

Finding the Fourth Proportional to 13,578.90, 18,739.35 and 7,610.37

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Solution

The fourth proportional to 13,578.90, 18,739.35 and 7,610.37 is: 10,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.90 : 18,739.35 = 7,610.37 : x
  2. Step 2: Convert to fraction form
    13,578.90/18,739.35 = 7,610.37/x
  3. Step 3: Cross multiply
    13,578.90x = 18,739.35 × 7,610.37
  4. Step 4: Simplify right side
    13,578.90x = 142,613,387.06
  5. Step 5: Solve for x
    x = 142,613,387.06/13,578.90
  6. Step 6: Final answer
    x = 10,502.57

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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.