Home / 21,004.41-28,986.09-12,051.54

Finding the Fourth Proportional to 21,004.41, 28,986.09 and 12,051.54

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Solution

The fourth proportional to 21,004.41, 28,986.09 and 12,051.54 is: 16,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.41 : 28,986.09 = 12,051.54 : x
  2. Step 2: Convert to fraction form
    21,004.41/28,986.09 = 12,051.54/x
  3. Step 3: Cross multiply
    21,004.41x = 28,986.09 × 12,051.54
  4. Step 4: Simplify right side
    21,004.41x = 349,327,023.08
  5. Step 5: Solve for x
    x = 349,327,023.08/21,004.41
  6. Step 6: Final answer
    x = 16,631.13

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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.