Home / 11,169.30-15,413.08-6,455.10

Finding the Fourth Proportional to 11,169.30, 15,413.08 and 6,455.10

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Solution

The fourth proportional to 11,169.30, 15,413.08 and 6,455.10 is: 8,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.30 : 15,413.08 = 6,455.10 : x
  2. Step 2: Convert to fraction form
    11,169.30/15,413.08 = 6,455.10/x
  3. Step 3: Cross multiply
    11,169.30x = 15,413.08 × 6,455.10
  4. Step 4: Simplify right side
    11,169.30x = 99,492,972.71
  5. Step 5: Solve for x
    x = 99,492,972.71/11,169.30
  6. Step 6: Final answer
    x = 8,907.72

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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.