Home / 28,343.52-39,115.44-16,404.72

Finding the Fourth Proportional to 28,343.52, 39,115.44 and 16,404.72

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Solution

The fourth proportional to 28,343.52, 39,115.44 and 16,404.72 is: 22,639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.52 : 39,115.44 = 16,404.72 : x
  2. Step 2: Convert to fraction form
    28,343.52/39,115.44 = 16,404.72/x
  3. Step 3: Cross multiply
    28,343.52x = 39,115.44 × 16,404.72
  4. Step 4: Simplify right side
    28,343.52x = 641,677,840.88
  5. Step 5: Solve for x
    x = 641,677,840.88/28,343.52
  6. Step 6: Final answer
    x = 22,639.31

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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.