Home / 13,458.36-18,570.92-7,489.22

Finding the Fourth Proportional to 13,458.36, 18,570.92 and 7,489.22

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Solution

The fourth proportional to 13,458.36, 18,570.92 and 7,489.22 is: 10,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.36 : 18,570.92 = 7,489.22 : x
  2. Step 2: Convert to fraction form
    13,458.36/18,570.92 = 7,489.22/x
  3. Step 3: Cross multiply
    13,458.36x = 18,570.92 × 7,489.22
  4. Step 4: Simplify right side
    13,458.36x = 139,081,705.48
  5. Step 5: Solve for x
    x = 139,081,705.48/13,458.36
  6. Step 6: Final answer
    x = 10,334.22

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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.