Home / 15,690.22-21,651.72-8,883.18

Finding the Fourth Proportional to 15,690.22, 21,651.72 and 8,883.18

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Solution

The fourth proportional to 15,690.22, 21,651.72 and 8,883.18 is: 12,258.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.22 : 21,651.72 = 8,883.18 : x
  2. Step 2: Convert to fraction form
    15,690.22/21,651.72 = 8,883.18/x
  3. Step 3: Cross multiply
    15,690.22x = 21,651.72 × 8,883.18
  4. Step 4: Simplify right side
    15,690.22x = 192,336,081.65
  5. Step 5: Solve for x
    x = 192,336,081.65/15,690.22
  6. Step 6: Final answer
    x = 12,258.34

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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.