Home / 21,214.78-29,277.31-11,783.34

Finding the Fourth Proportional to 21,214.78, 29,277.31 and 11,783.34

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Solution

The fourth proportional to 21,214.78, 29,277.31 and 11,783.34 is: 16,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.78 : 29,277.31 = 11,783.34 : x
  2. Step 2: Convert to fraction form
    21,214.78/29,277.31 = 11,783.34/x
  3. Step 3: Cross multiply
    21,214.78x = 29,277.31 × 11,783.34
  4. Step 4: Simplify right side
    21,214.78x = 344,984,622.53
  5. Step 5: Solve for x
    x = 344,984,622.53/21,214.78
  6. Step 6: Final answer
    x = 16,261.52

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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.