Home / 18,939.25-28,414.77-7,851.16

Finding the Fourth Proportional to 18,939.25, 28,414.77 and 7,851.16

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Solution

The fourth proportional to 18,939.25, 28,414.77 and 7,851.16 is: 11,779.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.25 : 28,414.77 = 7,851.16 : x
  2. Step 2: Convert to fraction form
    18,939.25/28,414.77 = 7,851.16/x
  3. Step 3: Cross multiply
    18,939.25x = 28,414.77 × 7,851.16
  4. Step 4: Simplify right side
    18,939.25x = 223,088,905.63
  5. Step 5: Solve for x
    x = 223,088,905.63/18,939.25
  6. Step 6: Final answer
    x = 11,779.18

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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.