Home / 21,019.50-28,998.41-13,467.06

Finding the Fourth Proportional to 21,019.50, 28,998.41 and 13,467.06

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Solution

The fourth proportional to 21,019.50, 28,998.41 and 13,467.06 is: 18,579.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.50 : 28,998.41 = 13,467.06 : x
  2. Step 2: Convert to fraction form
    21,019.50/28,998.41 = 13,467.06/x
  3. Step 3: Cross multiply
    21,019.50x = 28,998.41 × 13,467.06
  4. Step 4: Simplify right side
    21,019.50x = 390,523,260.04
  5. Step 5: Solve for x
    x = 390,523,260.04/21,019.50
  6. Step 6: Final answer
    x = 18,579.09

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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.