Home / 18,838.98-28,271.70-7,755.75

Finding the Fourth Proportional to 18,838.98, 28,271.70 and 7,755.75

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Solution

The fourth proportional to 18,838.98, 28,271.70 and 7,755.75 is: 11,639.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.98 : 28,271.70 = 7,755.75 : x
  2. Step 2: Convert to fraction form
    18,838.98/28,271.70 = 7,755.75/x
  3. Step 3: Cross multiply
    18,838.98x = 28,271.70 × 7,755.75
  4. Step 4: Simplify right side
    18,838.98x = 219,268,237.28
  5. Step 5: Solve for x
    x = 219,268,237.28/18,838.98
  6. Step 6: Final answer
    x = 11,639.07

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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.