Home / 15,516.61-21,413.14-8,443.04

Finding the Fourth Proportional to 15,516.61, 21,413.14 and 8,443.04

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Solution

The fourth proportional to 15,516.61, 21,413.14 and 8,443.04 is: 11,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.61 : 21,413.14 = 8,443.04 : x
  2. Step 2: Convert to fraction form
    15,516.61/21,413.14 = 8,443.04/x
  3. Step 3: Cross multiply
    15,516.61x = 21,413.14 × 8,443.04
  4. Step 4: Simplify right side
    15,516.61x = 180,791,869.37
  5. Step 5: Solve for x
    x = 180,791,869.37/15,516.61
  6. Step 6: Final answer
    x = 11,651.51

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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.