Home / 15,413.57-21,268.58-8,607.67

Finding the Fourth Proportional to 15,413.57, 21,268.58 and 8,607.67

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Solution

The fourth proportional to 15,413.57, 21,268.58 and 8,607.67 is: 11,877.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.57 : 21,268.58 = 8,607.67 : x
  2. Step 2: Convert to fraction form
    15,413.57/21,268.58 = 8,607.67/x
  3. Step 3: Cross multiply
    15,413.57x = 21,268.58 × 8,607.67
  4. Step 4: Simplify right side
    15,413.57x = 183,072,821.80
  5. Step 5: Solve for x
    x = 183,072,821.80/15,413.57
  6. Step 6: Final answer
    x = 11,877.38

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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.