Home / 19,982.90-29,971.44-12,564.62

Finding the Fourth Proportional to 19,982.90, 29,971.44 and 12,564.62

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Solution

The fourth proportional to 19,982.90, 29,971.44 and 12,564.62 is: 18,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.90 : 29,971.44 = 12,564.62 : x
  2. Step 2: Convert to fraction form
    19,982.90/29,971.44 = 12,564.62/x
  3. Step 3: Cross multiply
    19,982.90x = 29,971.44 × 12,564.62
  4. Step 4: Simplify right side
    19,982.90x = 376,579,754.45
  5. Step 5: Solve for x
    x = 376,579,754.45/19,982.90
  6. Step 6: Final answer
    x = 18,845.10

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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.