Home / 18,763.50-28,123.68-6,280.58

Finding the Fourth Proportional to 18,763.50, 28,123.68 and 6,280.58

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Solution

The fourth proportional to 18,763.50, 28,123.68 and 6,280.58 is: 9,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.50 : 28,123.68 = 6,280.58 : x
  2. Step 2: Convert to fraction form
    18,763.50/28,123.68 = 6,280.58/x
  3. Step 3: Cross multiply
    18,763.50x = 28,123.68 × 6,280.58
  4. Step 4: Simplify right side
    18,763.50x = 176,633,022.13
  5. Step 5: Solve for x
    x = 176,633,022.13/18,763.50
  6. Step 6: Final answer
    x = 9,413.65

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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.