Home / 15,413.77-21,271.07-8,699.68

Finding the Fourth Proportional to 15,413.77, 21,271.07 and 8,699.68

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Solution

The fourth proportional to 15,413.77, 21,271.07 and 8,699.68 is: 12,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.77 : 21,271.07 = 8,699.68 : x
  2. Step 2: Convert to fraction form
    15,413.77/21,271.07 = 8,699.68/x
  3. Step 3: Cross multiply
    15,413.77x = 21,271.07 × 8,699.68
  4. Step 4: Simplify right side
    15,413.77x = 185,051,470.83
  5. Step 5: Solve for x
    x = 185,051,470.83/15,413.77
  6. Step 6: Final answer
    x = 12,005.60

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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.