Home / 18,988.35-28,457.74-13,741.03

Finding the Fourth Proportional to 18,988.35, 28,457.74 and 13,741.03

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Solution

The fourth proportional to 18,988.35, 28,457.74 and 13,741.03 is: 20,593.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.35 : 28,457.74 = 13,741.03 : x
  2. Step 2: Convert to fraction form
    18,988.35/28,457.74 = 13,741.03/x
  3. Step 3: Cross multiply
    18,988.35x = 28,457.74 × 13,741.03
  4. Step 4: Simplify right side
    18,988.35x = 391,038,659.07
  5. Step 5: Solve for x
    x = 391,038,659.07/18,988.35
  6. Step 6: Final answer
    x = 20,593.61

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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.