Home / 28,336.70-39,103.08-15,760.64

Finding the Fourth Proportional to 28,336.70, 39,103.08 and 15,760.64

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Solution

The fourth proportional to 28,336.70, 39,103.08 and 15,760.64 is: 21,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,336.70 : 39,103.08 = 15,760.64 : x
  2. Step 2: Convert to fraction form
    28,336.70/39,103.08 = 15,760.64/x
  3. Step 3: Cross multiply
    28,336.70x = 39,103.08 × 15,760.64
  4. Step 4: Simplify right side
    28,336.70x = 616,289,566.77
  5. Step 5: Solve for x
    x = 616,289,566.77/28,336.70
  6. Step 6: Final answer
    x = 21,748.81

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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.