Home / 15,516.70-21,413.58-8,443.39

Finding the Fourth Proportional to 15,516.70, 21,413.58 and 8,443.39

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Solution

The fourth proportional to 15,516.70, 21,413.58 and 8,443.39 is: 11,652.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.70 : 21,413.58 = 8,443.39 : x
  2. Step 2: Convert to fraction form
    15,516.70/21,413.58 = 8,443.39/x
  3. Step 3: Cross multiply
    15,516.70x = 21,413.58 × 8,443.39
  4. Step 4: Simplify right side
    15,516.70x = 180,803,057.95
  5. Step 5: Solve for x
    x = 180,803,057.95/15,516.70
  6. Step 6: Final answer
    x = 11,652.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.