Home / 30,728.50-46,131.65-18,853.09

Finding the Fourth Proportional to 30,728.50, 46,131.65 and 18,853.09

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Solution

The fourth proportional to 30,728.50, 46,131.65 and 18,853.09 is: 28,303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.50 : 46,131.65 = 18,853.09 : x
  2. Step 2: Convert to fraction form
    30,728.50/46,131.65 = 18,853.09/x
  3. Step 3: Cross multiply
    30,728.50x = 46,131.65 × 18,853.09
  4. Step 4: Simplify right side
    30,728.50x = 869,724,149.30
  5. Step 5: Solve for x
    x = 869,724,149.30/30,728.50
  6. Step 6: Final answer
    x = 28,303.50

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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.