Home / 28,069.05-38,741.78-18,510.65

Finding the Fourth Proportional to 28,069.05, 38,741.78 and 18,510.65

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Solution

The fourth proportional to 28,069.05, 38,741.78 and 18,510.65 is: 25,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.05 : 38,741.78 = 18,510.65 : x
  2. Step 2: Convert to fraction form
    28,069.05/38,741.78 = 18,510.65/x
  3. Step 3: Cross multiply
    28,069.05x = 38,741.78 × 18,510.65
  4. Step 4: Simplify right side
    28,069.05x = 717,135,529.96
  5. Step 5: Solve for x
    x = 717,135,529.96/28,069.05
  6. Step 6: Final answer
    x = 25,548.98

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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.