Home / 18,790.28-28,185.32-4,750.31

Finding the Fourth Proportional to 18,790.28, 28,185.32 and 4,750.31

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Solution

The fourth proportional to 18,790.28, 28,185.32 and 4,750.31 is: 7,125.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.28 : 28,185.32 = 4,750.31 : x
  2. Step 2: Convert to fraction form
    18,790.28/28,185.32 = 4,750.31/x
  3. Step 3: Cross multiply
    18,790.28x = 28,185.32 × 4,750.31
  4. Step 4: Simplify right side
    18,790.28x = 133,888,878.40
  5. Step 5: Solve for x
    x = 133,888,878.40/18,790.28
  6. Step 6: Final answer
    x = 7,125.43

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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.