Home / 20,763.95-31,126.73-8,280.94

Finding the Fourth Proportional to 20,763.95, 31,126.73 and 8,280.94

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Solution

The fourth proportional to 20,763.95, 31,126.73 and 8,280.94 is: 12,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.95 : 31,126.73 = 8,280.94 : x
  2. Step 2: Convert to fraction form
    20,763.95/31,126.73 = 8,280.94/x
  3. Step 3: Cross multiply
    20,763.95x = 31,126.73 × 8,280.94
  4. Step 4: Simplify right side
    20,763.95x = 257,758,526.41
  5. Step 5: Solve for x
    x = 257,758,526.41/20,763.95
  6. Step 6: Final answer
    x = 12,413.75

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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.