Home / 28,390.83-39,179.34-16,461.09

Finding the Fourth Proportional to 28,390.83, 39,179.34 and 16,461.09

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Solution

The fourth proportional to 28,390.83, 39,179.34 and 16,461.09 is: 22,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.83 : 39,179.34 = 16,461.09 : x
  2. Step 2: Convert to fraction form
    28,390.83/39,179.34 = 16,461.09/x
  3. Step 3: Cross multiply
    28,390.83x = 39,179.34 × 16,461.09
  4. Step 4: Simplify right side
    28,390.83x = 644,934,641.88
  5. Step 5: Solve for x
    x = 644,934,641.88/28,390.83
  6. Step 6: Final answer
    x = 22,716.30

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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.