Home / 18,109.28-27,171.43-9,779.51

Finding the Fourth Proportional to 18,109.28, 27,171.43 and 9,779.51

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Solution

The fourth proportional to 18,109.28, 27,171.43 and 9,779.51 is: 14,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.28 : 27,171.43 = 9,779.51 : x
  2. Step 2: Convert to fraction form
    18,109.28/27,171.43 = 9,779.51/x
  3. Step 3: Cross multiply
    18,109.28x = 27,171.43 × 9,779.51
  4. Step 4: Simplify right side
    18,109.28x = 265,723,314.88
  5. Step 5: Solve for x
    x = 265,723,314.88/18,109.28
  6. Step 6: Final answer
    x = 14,673.32

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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.