Home / 28,069.88-38,735.70-15,494.36

Finding the Fourth Proportional to 28,069.88, 38,735.70 and 15,494.36

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Solution

The fourth proportional to 28,069.88, 38,735.70 and 15,494.36 is: 21,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.88 : 38,735.70 = 15,494.36 : x
  2. Step 2: Convert to fraction form
    28,069.88/38,735.70 = 15,494.36/x
  3. Step 3: Cross multiply
    28,069.88x = 38,735.70 × 15,494.36
  4. Step 4: Simplify right side
    28,069.88x = 600,184,880.65
  5. Step 5: Solve for x
    x = 600,184,880.65/28,069.88
  6. Step 6: Final answer
    x = 21,381.81

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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.