Home / 28,343.51-39,109.26-16,404.78

Finding the Fourth Proportional to 28,343.51, 39,109.26 and 16,404.78

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Solution

The fourth proportional to 28,343.51, 39,109.26 and 16,404.78 is: 22,635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.51 : 39,109.26 = 16,404.78 : x
  2. Step 2: Convert to fraction form
    28,343.51/39,109.26 = 16,404.78/x
  3. Step 3: Cross multiply
    28,343.51x = 39,109.26 × 16,404.78
  4. Step 4: Simplify right side
    28,343.51x = 641,578,806.26
  5. Step 5: Solve for x
    x = 641,578,806.26/28,343.51
  6. Step 6: Final answer
    x = 22,635.83

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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.