Home / 22,570.24-31,147.32-13,138.60

Finding the Fourth Proportional to 22,570.24, 31,147.32 and 13,138.60

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Solution

The fourth proportional to 22,570.24, 31,147.32 and 13,138.60 is: 18,131.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,570.24 : 31,147.32 = 13,138.60 : x
  2. Step 2: Convert to fraction form
    22,570.24/31,147.32 = 13,138.60/x
  3. Step 3: Cross multiply
    22,570.24x = 31,147.32 × 13,138.60
  4. Step 4: Simplify right side
    22,570.24x = 409,232,178.55
  5. Step 5: Solve for x
    x = 409,232,178.55/22,570.24
  6. Step 6: Final answer
    x = 18,131.49

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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.