Home / 21,326.72-29,430.60-11,895.44

Finding the Fourth Proportional to 21,326.72, 29,430.60 and 11,895.44

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Solution

The fourth proportional to 21,326.72, 29,430.60 and 11,895.44 is: 16,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.72 : 29,430.60 = 11,895.44 : x
  2. Step 2: Convert to fraction form
    21,326.72/29,430.60 = 11,895.44/x
  3. Step 3: Cross multiply
    21,326.72x = 29,430.60 × 11,895.44
  4. Step 4: Simplify right side
    21,326.72x = 350,089,936.46
  5. Step 5: Solve for x
    x = 350,089,936.46/21,326.72
  6. Step 6: Final answer
    x = 16,415.55

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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.