Home / 28,241.22-42,354.39-13,420.65

Finding the Fourth Proportional to 28,241.22, 42,354.39 and 13,420.65

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Solution

The fourth proportional to 28,241.22, 42,354.39 and 13,420.65 is: 20,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.22 : 42,354.39 = 13,420.65 : x
  2. Step 2: Convert to fraction form
    28,241.22/42,354.39 = 13,420.65/x
  3. Step 3: Cross multiply
    28,241.22x = 42,354.39 × 13,420.65
  4. Step 4: Simplify right side
    28,241.22x = 568,423,444.15
  5. Step 5: Solve for x
    x = 568,423,444.15/28,241.22
  6. Step 6: Final answer
    x = 20,127.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.