Home / 18,905.14-28,363.26-7,812.46

Finding the Fourth Proportional to 18,905.14, 28,363.26 and 7,812.46

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Solution

The fourth proportional to 18,905.14, 28,363.26 and 7,812.46 is: 11,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.14 : 28,363.26 = 7,812.46 : x
  2. Step 2: Convert to fraction form
    18,905.14/28,363.26 = 7,812.46/x
  3. Step 3: Cross multiply
    18,905.14x = 28,363.26 × 7,812.46
  4. Step 4: Simplify right side
    18,905.14x = 221,586,834.22
  5. Step 5: Solve for x
    x = 221,586,834.22/18,905.14
  6. Step 6: Final answer
    x = 11,720.98

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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.