Home / 21,779.16-30,072.18-16,735.43

Finding the Fourth Proportional to 21,779.16, 30,072.18 and 16,735.43

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Solution

The fourth proportional to 21,779.16, 30,072.18 and 16,735.43 is: 23,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.16 : 30,072.18 = 16,735.43 : x
  2. Step 2: Convert to fraction form
    21,779.16/30,072.18 = 16,735.43/x
  3. Step 3: Cross multiply
    21,779.16x = 30,072.18 × 16,735.43
  4. Step 4: Simplify right side
    21,779.16x = 503,270,712.98
  5. Step 5: Solve for x
    x = 503,270,712.98/21,779.16
  6. Step 6: Final answer
    x = 23,107.90

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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.