Home / 28,388.79-39,174.63-16,449.99

Finding the Fourth Proportional to 28,388.79, 39,174.63 and 16,449.99

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Solution

The fourth proportional to 28,388.79, 39,174.63 and 16,449.99 is: 22,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.79 : 39,174.63 = 16,449.99 : x
  2. Step 2: Convert to fraction form
    28,388.79/39,174.63 = 16,449.99/x
  3. Step 3: Cross multiply
    28,388.79x = 39,174.63 × 16,449.99
  4. Step 4: Simplify right side
    28,388.79x = 644,422,271.75
  5. Step 5: Solve for x
    x = 644,422,271.75/28,388.79
  6. Step 6: Final answer
    x = 22,699.89

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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.