Home / 30,391.61-41,907.35-19,761.53

Finding the Fourth Proportional to 30,391.61, 41,907.35 and 19,761.53

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Solution

The fourth proportional to 30,391.61, 41,907.35 and 19,761.53 is: 27,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.61 : 41,907.35 = 19,761.53 : x
  2. Step 2: Convert to fraction form
    30,391.61/41,907.35 = 19,761.53/x
  3. Step 3: Cross multiply
    30,391.61x = 41,907.35 × 19,761.53
  4. Step 4: Simplify right side
    30,391.61x = 828,153,144.71
  5. Step 5: Solve for x
    x = 828,153,144.71/30,391.61
  6. Step 6: Final answer
    x = 27,249.40

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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.