Home / 30,312-41,829.96-20,751.64

Finding the Fourth Proportional to 30,312, 41,829.96 and 20,751.64

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Solution

The fourth proportional to 30,312, 41,829.96 and 20,751.64 is: 28,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,312 : 41,829.96 = 20,751.64 : x
  2. Step 2: Convert to fraction form
    30,312/41,829.96 = 20,751.64/x
  3. Step 3: Cross multiply
    30,312x = 41,829.96 × 20,751.64
  4. Step 4: Simplify right side
    30,312x = 868,040,271.13
  5. Step 5: Solve for x
    x = 868,040,271.13/30,312
  6. Step 6: Final answer
    x = 28,636.85

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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.