Home / 21,353.03-29,466.56-11,921.39

Finding the Fourth Proportional to 21,353.03, 29,466.56 and 11,921.39

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Solution

The fourth proportional to 21,353.03, 29,466.56 and 11,921.39 is: 16,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.03 : 29,466.56 = 11,921.39 : x
  2. Step 2: Convert to fraction form
    21,353.03/29,466.56 = 11,921.39/x
  3. Step 3: Cross multiply
    21,353.03x = 29,466.56 × 11,921.39
  4. Step 4: Simplify right side
    21,353.03x = 351,282,236.19
  5. Step 5: Solve for x
    x = 351,282,236.19/21,353.03
  6. Step 6: Final answer
    x = 16,451.17

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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.