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Finding the Fourth Proportional to 30,795.55, 46,192.91 and 7,421.78

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Solution

The fourth proportional to 30,795.55, 46,192.91 and 7,421.78 is: 11,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,795.55 : 46,192.91 = 7,421.78 : x
  2. Step 2: Convert to fraction form
    30,795.55/46,192.91 = 7,421.78/x
  3. Step 3: Cross multiply
    30,795.55x = 46,192.91 × 7,421.78
  4. Step 4: Simplify right side
    30,795.55x = 342,833,705.79
  5. Step 5: Solve for x
    x = 342,833,705.79/30,795.55
  6. Step 6: Final answer
    x = 11,132.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.