Home / 13,356.21-20,135.74-12,641.79

Finding the Fourth Proportional to 13,356.21, 20,135.74 and 12,641.79

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Solution

The fourth proportional to 13,356.21, 20,135.74 and 12,641.79 is: 19,058.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.21 : 20,135.74 = 12,641.79 : x
  2. Step 2: Convert to fraction form
    13,356.21/20,135.74 = 12,641.79/x
  3. Step 3: Cross multiply
    13,356.21x = 20,135.74 × 12,641.79
  4. Step 4: Simplify right side
    13,356.21x = 254,551,764.97
  5. Step 5: Solve for x
    x = 254,551,764.97/13,356.21
  6. Step 6: Final answer
    x = 19,058.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.