Home / 28,520.52-39,339.78-18,295.36

Finding the Fourth Proportional to 28,520.52, 39,339.78 and 18,295.36

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Solution

The fourth proportional to 28,520.52, 39,339.78 and 18,295.36 is: 25,235.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.52 : 39,339.78 = 18,295.36 : x
  2. Step 2: Convert to fraction form
    28,520.52/39,339.78 = 18,295.36/x
  3. Step 3: Cross multiply
    28,520.52x = 39,339.78 × 18,295.36
  4. Step 4: Simplify right side
    28,520.52x = 719,735,437.42
  5. Step 5: Solve for x
    x = 719,735,437.42/28,520.52
  6. Step 6: Final answer
    x = 25,235.71

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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.