Home / 28,270.09-42,405.14-10,739.92

Finding the Fourth Proportional to 28,270.09, 42,405.14 and 10,739.92

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Solution

The fourth proportional to 28,270.09, 42,405.14 and 10,739.92 is: 16,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.09 : 42,405.14 = 10,739.92 : x
  2. Step 2: Convert to fraction form
    28,270.09/42,405.14 = 10,739.92/x
  3. Step 3: Cross multiply
    28,270.09x = 42,405.14 × 10,739.92
  4. Step 4: Simplify right side
    28,270.09x = 455,427,811.19
  5. Step 5: Solve for x
    x = 455,427,811.19/28,270.09
  6. Step 6: Final answer
    x = 16,109.88

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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.