Home / 28,541.20-42,811.80-18,518.80

Finding the Fourth Proportional to 28,541.20, 42,811.80 and 18,518.80

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Solution

The fourth proportional to 28,541.20, 42,811.80 and 18,518.80 is: 27,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.20 : 42,811.80 = 18,518.80 : x
  2. Step 2: Convert to fraction form
    28,541.20/42,811.80 = 18,518.80/x
  3. Step 3: Cross multiply
    28,541.20x = 42,811.80 × 18,518.80
  4. Step 4: Simplify right side
    28,541.20x = 792,823,161.84
  5. Step 5: Solve for x
    x = 792,823,161.84/28,541.20
  6. Step 6: Final answer
    x = 27,778.20

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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.