Home / 28,762.30-39,684.23-16,828.57

Finding the Fourth Proportional to 28,762.30, 39,684.23 and 16,828.57

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Solution

The fourth proportional to 28,762.30, 39,684.23 and 16,828.57 is: 23,218.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.30 : 39,684.23 = 16,828.57 : x
  2. Step 2: Convert to fraction form
    28,762.30/39,684.23 = 16,828.57/x
  3. Step 3: Cross multiply
    28,762.30x = 39,684.23 × 16,828.57
  4. Step 4: Simplify right side
    28,762.30x = 667,828,758.31
  5. Step 5: Solve for x
    x = 667,828,758.31/28,762.30
  6. Step 6: Final answer
    x = 23,218.89

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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.