Home / 28,990.18-43,485.68-8,213.68

Finding the Fourth Proportional to 28,990.18, 43,485.68 and 8,213.68

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Solution

The fourth proportional to 28,990.18, 43,485.68 and 8,213.68 is: 12,320.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.18 : 43,485.68 = 8,213.68 : x
  2. Step 2: Convert to fraction form
    28,990.18/43,485.68 = 8,213.68/x
  3. Step 3: Cross multiply
    28,990.18x = 43,485.68 × 8,213.68
  4. Step 4: Simplify right side
    28,990.18x = 357,177,460.10
  5. Step 5: Solve for x
    x = 357,177,460.10/28,990.18
  6. Step 6: Final answer
    x = 12,320.64

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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.