Home / 12,009.90-18,017.66-4,112.51

Finding the Fourth Proportional to 12,009.90, 18,017.66 and 4,112.51

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Solution

The fourth proportional to 12,009.90, 18,017.66 and 4,112.51 is: 6,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.90 : 18,017.66 = 4,112.51 : x
  2. Step 2: Convert to fraction form
    12,009.90/18,017.66 = 4,112.51/x
  3. Step 3: Cross multiply
    12,009.90x = 18,017.66 × 4,112.51
  4. Step 4: Simplify right side
    12,009.90x = 74,097,727.12
  5. Step 5: Solve for x
    x = 74,097,727.12/12,009.90
  6. Step 6: Final answer
    x = 6,169.72

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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.