Home / 28,458.09-39,273.11-16,520.71

Finding the Fourth Proportional to 28,458.09, 39,273.11 and 16,520.71

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Solution

The fourth proportional to 28,458.09, 39,273.11 and 16,520.71 is: 22,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.09 : 39,273.11 = 16,520.71 : x
  2. Step 2: Convert to fraction form
    28,458.09/39,273.11 = 16,520.71/x
  3. Step 3: Cross multiply
    28,458.09x = 39,273.11 × 16,520.71
  4. Step 4: Simplify right side
    28,458.09x = 648,819,661.11
  5. Step 5: Solve for x
    x = 648,819,661.11/28,458.09
  6. Step 6: Final answer
    x = 22,799.13

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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.