Home / 13,058.80-18,014.48-8,270.72

Finding the Fourth Proportional to 13,058.80, 18,014.48 and 8,270.72

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Solution

The fourth proportional to 13,058.80, 18,014.48 and 8,270.72 is: 11,409.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.80 : 18,014.48 = 8,270.72 : x
  2. Step 2: Convert to fraction form
    13,058.80/18,014.48 = 8,270.72/x
  3. Step 3: Cross multiply
    13,058.80x = 18,014.48 × 8,270.72
  4. Step 4: Simplify right side
    13,058.80x = 148,992,720.03
  5. Step 5: Solve for x
    x = 148,992,720.03/13,058.80
  6. Step 6: Final answer
    x = 11,409.37

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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.