Home / 28,913.15-43,368.21-9,190.19

Finding the Fourth Proportional to 28,913.15, 43,368.21 and 9,190.19

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Solution

The fourth proportional to 28,913.15, 43,368.21 and 9,190.19 is: 13,784.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.15 : 43,368.21 = 9,190.19 : x
  2. Step 2: Convert to fraction form
    28,913.15/43,368.21 = 9,190.19/x
  3. Step 3: Cross multiply
    28,913.15x = 43,368.21 × 9,190.19
  4. Step 4: Simplify right side
    28,913.15x = 398,562,198.28
  5. Step 5: Solve for x
    x = 398,562,198.28/28,913.15
  6. Step 6: Final answer
    x = 13,784.81

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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.