Home / 21,258.16-29,336.12-11,698.64

Finding the Fourth Proportional to 21,258.16, 29,336.12 and 11,698.64

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Solution

The fourth proportional to 21,258.16, 29,336.12 and 11,698.64 is: 16,144.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.16 : 29,336.12 = 11,698.64 : x
  2. Step 2: Convert to fraction form
    21,258.16/29,336.12 = 11,698.64/x
  3. Step 3: Cross multiply
    21,258.16x = 29,336.12 × 11,698.64
  4. Step 4: Simplify right side
    21,258.16x = 343,192,706.88
  5. Step 5: Solve for x
    x = 343,192,706.88/21,258.16
  6. Step 6: Final answer
    x = 16,144.05

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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.