Home / 18,993.06-28,495.35-13,457.07

Finding the Fourth Proportional to 18,993.06, 28,495.35 and 13,457.07

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Solution

The fourth proportional to 18,993.06, 28,495.35 and 13,457.07 is: 20,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.06 : 28,495.35 = 13,457.07 : x
  2. Step 2: Convert to fraction form
    18,993.06/28,495.35 = 13,457.07/x
  3. Step 3: Cross multiply
    18,993.06x = 28,495.35 × 13,457.07
  4. Step 4: Simplify right side
    18,993.06x = 383,463,919.62
  5. Step 5: Solve for x
    x = 383,463,919.62/18,993.06
  6. Step 6: Final answer
    x = 20,189.69

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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.