Home / 20,271.08-30,413.64-7,125.32

Finding the Fourth Proportional to 20,271.08, 30,413.64 and 7,125.32

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Solution

The fourth proportional to 20,271.08, 30,413.64 and 7,125.32 is: 10,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.08 : 30,413.64 = 7,125.32 : x
  2. Step 2: Convert to fraction form
    20,271.08/30,413.64 = 7,125.32/x
  3. Step 3: Cross multiply
    20,271.08x = 30,413.64 × 7,125.32
  4. Step 4: Simplify right side
    20,271.08x = 216,706,917.36
  5. Step 5: Solve for x
    x = 216,706,917.36/20,271.08
  6. Step 6: Final answer
    x = 10,690.45

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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.