Home / 22,722.72-31,355.60-13,290.40

Finding the Fourth Proportional to 22,722.72, 31,355.60 and 13,290.40

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Solution

The fourth proportional to 22,722.72, 31,355.60 and 13,290.40 is: 18,339.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,722.72 : 31,355.60 = 13,290.40 : x
  2. Step 2: Convert to fraction form
    22,722.72/31,355.60 = 13,290.40/x
  3. Step 3: Cross multiply
    22,722.72x = 31,355.60 × 13,290.40
  4. Step 4: Simplify right side
    22,722.72x = 416,728,466.24
  5. Step 5: Solve for x
    x = 416,728,466.24/22,722.72
  6. Step 6: Final answer
    x = 18,339.73

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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.