Home / 13,664.83-18,720.89-13,152.90

Finding the Fourth Proportional to 13,664.83, 18,720.89 and 13,152.90

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Solution

The fourth proportional to 13,664.83, 18,720.89 and 13,152.90 is: 18,019.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.83 : 18,720.89 = 13,152.90 : x
  2. Step 2: Convert to fraction form
    13,664.83/18,720.89 = 13,152.90/x
  3. Step 3: Cross multiply
    13,664.83x = 18,720.89 × 13,152.90
  4. Step 4: Simplify right side
    13,664.83x = 246,233,994.08
  5. Step 5: Solve for x
    x = 246,233,994.08/13,664.83
  6. Step 6: Final answer
    x = 18,019.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.