Home / 30,307.86-41,841.21-21,260.94

Finding the Fourth Proportional to 30,307.86, 41,841.21 and 21,260.94

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Solution

The fourth proportional to 30,307.86, 41,841.21 and 21,260.94 is: 29,351.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.86 : 41,841.21 = 21,260.94 : x
  2. Step 2: Convert to fraction form
    30,307.86/41,841.21 = 21,260.94/x
  3. Step 3: Cross multiply
    30,307.86x = 41,841.21 × 21,260.94
  4. Step 4: Simplify right side
    30,307.86x = 889,583,455.34
  5. Step 5: Solve for x
    x = 889,583,455.34/30,307.86
  6. Step 6: Final answer
    x = 29,351.58

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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.