Home / 18,946.14-28,419.30-4,905.18

Finding the Fourth Proportional to 18,946.14, 28,419.30 and 4,905.18

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Solution

The fourth proportional to 18,946.14, 28,419.30 and 4,905.18 is: 7,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.14 : 28,419.30 = 4,905.18 : x
  2. Step 2: Convert to fraction form
    18,946.14/28,419.30 = 4,905.18/x
  3. Step 3: Cross multiply
    18,946.14x = 28,419.30 × 4,905.18
  4. Step 4: Simplify right side
    18,946.14x = 139,401,781.97
  5. Step 5: Solve for x
    x = 139,401,781.97/18,946.14
  6. Step 6: Final answer
    x = 7,357.79

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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.