Home / 18,984.59-28,460.67-13,420.43

Finding the Fourth Proportional to 18,984.59, 28,460.67 and 13,420.43

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Solution

The fourth proportional to 18,984.59, 28,460.67 and 13,420.43 is: 20,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.59 : 28,460.67 = 13,420.43 : x
  2. Step 2: Convert to fraction form
    18,984.59/28,460.67 = 13,420.43/x
  3. Step 3: Cross multiply
    18,984.59x = 28,460.67 × 13,420.43
  4. Step 4: Simplify right side
    18,984.59x = 381,954,429.49
  5. Step 5: Solve for x
    x = 381,954,429.49/18,984.59
  6. Step 6: Final answer
    x = 20,119.18

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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.