Home / 28,130.64-42,199.14-9,413.16

Finding the Fourth Proportional to 28,130.64, 42,199.14 and 9,413.16

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Solution

The fourth proportional to 28,130.64, 42,199.14 and 9,413.16 is: 14,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.64 : 42,199.14 = 9,413.16 : x
  2. Step 2: Convert to fraction form
    28,130.64/42,199.14 = 9,413.16/x
  3. Step 3: Cross multiply
    28,130.64x = 42,199.14 × 9,413.16
  4. Step 4: Simplify right side
    28,130.64x = 397,227,256.68
  5. Step 5: Solve for x
    x = 397,227,256.68/28,130.64
  6. Step 6: Final answer
    x = 14,120.80

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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.