Home / 12,010.90-18,019.16-4,113.51

Finding the Fourth Proportional to 12,010.90, 18,019.16 and 4,113.51

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Solution

The fourth proportional to 12,010.90, 18,019.16 and 4,113.51 is: 6,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,010.90 : 18,019.16 = 4,113.51 : x
  2. Step 2: Convert to fraction form
    12,010.90/18,019.16 = 4,113.51/x
  3. Step 3: Cross multiply
    12,010.90x = 18,019.16 × 4,113.51
  4. Step 4: Simplify right side
    12,010.90x = 74,121,994.85
  5. Step 5: Solve for x
    x = 74,121,994.85/12,010.90
  6. Step 6: Final answer
    x = 6,171.23

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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.