Home / 13,878.90-20,821.09-4,018.26

Finding the Fourth Proportional to 13,878.90, 20,821.09 and 4,018.26

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Solution

The fourth proportional to 13,878.90, 20,821.09 and 4,018.26 is: 6,028.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.90 : 20,821.09 = 4,018.26 : x
  2. Step 2: Convert to fraction form
    13,878.90/20,821.09 = 4,018.26/x
  3. Step 3: Cross multiply
    13,878.90x = 20,821.09 × 4,018.26
  4. Step 4: Simplify right side
    13,878.90x = 83,664,543.06
  5. Step 5: Solve for x
    x = 83,664,543.06/13,878.90
  6. Step 6: Final answer
    x = 6,028.18

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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.