Home / 20,415.48-30,608.80-7,925.12

Finding the Fourth Proportional to 20,415.48, 30,608.80 and 7,925.12

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Solution

The fourth proportional to 20,415.48, 30,608.80 and 7,925.12 is: 11,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.48 : 30,608.80 = 7,925.12 : x
  2. Step 2: Convert to fraction form
    20,415.48/30,608.80 = 7,925.12/x
  3. Step 3: Cross multiply
    20,415.48x = 30,608.80 × 7,925.12
  4. Step 4: Simplify right side
    20,415.48x = 242,578,413.06
  5. Step 5: Solve for x
    x = 242,578,413.06/20,415.48
  6. Step 6: Final answer
    x = 11,882.08

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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.