Home / 30,633.80-42,243.53-28,847.93

Finding the Fourth Proportional to 30,633.80, 42,243.53 and 28,847.93

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Solution

The fourth proportional to 30,633.80, 42,243.53 and 28,847.93 is: 39,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.80 : 42,243.53 = 28,847.93 : x
  2. Step 2: Convert to fraction form
    30,633.80/42,243.53 = 28,847.93/x
  3. Step 3: Cross multiply
    30,633.80x = 42,243.53 × 28,847.93
  4. Step 4: Simplify right side
    30,633.80x = 1,218,638,040.94
  5. Step 5: Solve for x
    x = 1,218,638,040.94/30,633.80
  6. Step 6: Final answer
    x = 39,780.84

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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.