Home / 28,007.51-38,624.40-20,441.87

Finding the Fourth Proportional to 28,007.51, 38,624.40 and 20,441.87

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Solution

The fourth proportional to 28,007.51, 38,624.40 and 20,441.87 is: 28,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.51 : 38,624.40 = 20,441.87 : x
  2. Step 2: Convert to fraction form
    28,007.51/38,624.40 = 20,441.87/x
  3. Step 3: Cross multiply
    28,007.51x = 38,624.40 × 20,441.87
  4. Step 4: Simplify right side
    28,007.51x = 789,554,668.30
  5. Step 5: Solve for x
    x = 789,554,668.30/28,007.51
  6. Step 6: Final answer
    x = 28,190.82

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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.