Home / 21,353.15-29,466.74-11,921.51

Finding the Fourth Proportional to 21,353.15, 29,466.74 and 11,921.51

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Solution

The fourth proportional to 21,353.15, 29,466.74 and 11,921.51 is: 16,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.15 : 29,466.74 = 11,921.51 : x
  2. Step 2: Convert to fraction form
    21,353.15/29,466.74 = 11,921.51/x
  3. Step 3: Cross multiply
    21,353.15x = 29,466.74 × 11,921.51
  4. Step 4: Simplify right side
    21,353.15x = 351,287,975.97
  5. Step 5: Solve for x
    x = 351,287,975.97/21,353.15
  6. Step 6: Final answer
    x = 16,451.34

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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.