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Finding the Fourth Proportional to 16,645.75, 24,985.73 and 12,987.97

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Solution

The fourth proportional to 16,645.75, 24,985.73 and 12,987.97 is: 19,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,645.75 : 24,985.73 = 12,987.97 : x
  2. Step 2: Convert to fraction form
    16,645.75/24,985.73 = 12,987.97/x
  3. Step 3: Cross multiply
    16,645.75x = 24,985.73 × 12,987.97
  4. Step 4: Simplify right side
    16,645.75x = 324,513,911.67
  5. Step 5: Solve for x
    x = 324,513,911.67/16,645.75
  6. Step 6: Final answer
    x = 19,495.30

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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.