Home / 21,135.20-29,166.08-11,704.16

Finding the Fourth Proportional to 21,135.20, 29,166.08 and 11,704.16

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Solution

The fourth proportional to 21,135.20, 29,166.08 and 11,704.16 is: 16,151.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.20 : 29,166.08 = 11,704.16 : x
  2. Step 2: Convert to fraction form
    21,135.20/29,166.08 = 11,704.16/x
  3. Step 3: Cross multiply
    21,135.20x = 29,166.08 × 11,704.16
  4. Step 4: Simplify right side
    21,135.20x = 341,364,466.89
  5. Step 5: Solve for x
    x = 341,364,466.89/21,135.20
  6. Step 6: Final answer
    x = 16,151.47

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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.