Home / 28,388.54-39,174.28-16,449.74

Finding the Fourth Proportional to 28,388.54, 39,174.28 and 16,449.74

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Solution

The fourth proportional to 28,388.54, 39,174.28 and 16,449.74 is: 22,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.54 : 39,174.28 = 16,449.74 : x
  2. Step 2: Convert to fraction form
    28,388.54/39,174.28 = 16,449.74/x
  3. Step 3: Cross multiply
    28,388.54x = 39,174.28 × 16,449.74
  4. Step 4: Simplify right side
    28,388.54x = 644,406,720.69
  5. Step 5: Solve for x
    x = 644,406,720.69/28,388.54
  6. Step 6: Final answer
    x = 22,699.54

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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.