Home / 10,413.76-15,620.64-4,257.76

Finding the Fourth Proportional to 10,413.76, 15,620.64 and 4,257.76

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Solution

The fourth proportional to 10,413.76, 15,620.64 and 4,257.76 is: 6,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,413.76 : 15,620.64 = 4,257.76 : x
  2. Step 2: Convert to fraction form
    10,413.76/15,620.64 = 4,257.76/x
  3. Step 3: Cross multiply
    10,413.76x = 15,620.64 × 4,257.76
  4. Step 4: Simplify right side
    10,413.76x = 66,508,936.17
  5. Step 5: Solve for x
    x = 66,508,936.17/10,413.76
  6. Step 6: Final answer
    x = 6,386.64

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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.