Home / 13,958.22-19,261.34-7,989.80

Finding the Fourth Proportional to 13,958.22, 19,261.34 and 7,989.80

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Solution

The fourth proportional to 13,958.22, 19,261.34 and 7,989.80 is: 11,025.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.22 : 19,261.34 = 7,989.80 : x
  2. Step 2: Convert to fraction form
    13,958.22/19,261.34 = 7,989.80/x
  3. Step 3: Cross multiply
    13,958.22x = 19,261.34 × 7,989.80
  4. Step 4: Simplify right side
    13,958.22x = 153,894,254.33
  5. Step 5: Solve for x
    x = 153,894,254.33/13,958.22
  6. Step 6: Final answer
    x = 11,025.35

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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.