Home / 28,208.12-38,914.67-18,134.69

Finding the Fourth Proportional to 28,208.12, 38,914.67 and 18,134.69

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Solution

The fourth proportional to 28,208.12, 38,914.67 and 18,134.69 is: 25,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.12 : 38,914.67 = 18,134.69 : x
  2. Step 2: Convert to fraction form
    28,208.12/38,914.67 = 18,134.69/x
  3. Step 3: Cross multiply
    28,208.12x = 38,914.67 × 18,134.69
  4. Step 4: Simplify right side
    28,208.12x = 705,705,327.67
  5. Step 5: Solve for x
    x = 705,705,327.67/28,208.12
  6. Step 6: Final answer
    x = 25,017.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.