Home / 21,346.36-29,455.26-11,915.32

Finding the Fourth Proportional to 21,346.36, 29,455.26 and 11,915.32

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Solution

The fourth proportional to 21,346.36, 29,455.26 and 11,915.32 is: 16,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.36 : 29,455.26 = 11,915.32 : x
  2. Step 2: Convert to fraction form
    21,346.36/29,455.26 = 11,915.32/x
  3. Step 3: Cross multiply
    21,346.36x = 29,455.26 × 11,915.32
  4. Step 4: Simplify right side
    21,346.36x = 350,968,848.58
  5. Step 5: Solve for x
    x = 350,968,848.58/21,346.36
  6. Step 6: Final answer
    x = 16,441.63

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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.