Home / 10,413.20-15,619.80-7,509.92

Finding the Fourth Proportional to 10,413.20, 15,619.80 and 7,509.92

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Solution

The fourth proportional to 10,413.20, 15,619.80 and 7,509.92 is: 11,264.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,413.20 : 15,619.80 = 7,509.92 : x
  2. Step 2: Convert to fraction form
    10,413.20/15,619.80 = 7,509.92/x
  3. Step 3: Cross multiply
    10,413.20x = 15,619.80 × 7,509.92
  4. Step 4: Simplify right side
    10,413.20x = 117,303,448.42
  5. Step 5: Solve for x
    x = 117,303,448.42/10,413.20
  6. Step 6: Final answer
    x = 11,264.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.