Home / 18,946.60-28,419.96-18,489.89

Finding the Fourth Proportional to 18,946.60, 28,419.96 and 18,489.89

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Solution

The fourth proportional to 18,946.60, 28,419.96 and 18,489.89 is: 27,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.60 : 28,419.96 = 18,489.89 : x
  2. Step 2: Convert to fraction form
    18,946.60/28,419.96 = 18,489.89/x
  3. Step 3: Cross multiply
    18,946.60x = 28,419.96 × 18,489.89
  4. Step 4: Simplify right side
    18,946.60x = 525,482,074.59
  5. Step 5: Solve for x
    x = 525,482,074.59/18,946.60
  6. Step 6: Final answer
    x = 27,734.90

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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.