Home / 20,064.92-29,975.36-12,987.27

Finding the Fourth Proportional to 20,064.92, 29,975.36 and 12,987.27

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Solution

The fourth proportional to 20,064.92, 29,975.36 and 12,987.27 is: 19,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064.92 : 29,975.36 = 12,987.27 : x
  2. Step 2: Convert to fraction form
    20,064.92/29,975.36 = 12,987.27/x
  3. Step 3: Cross multiply
    20,064.92x = 29,975.36 × 12,987.27
  4. Step 4: Simplify right side
    20,064.92x = 389,298,028.73
  5. Step 5: Solve for x
    x = 389,298,028.73/20,064.92
  6. Step 6: Final answer
    x = 19,401.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.