Home / 13,622.49-18,800.78-8,316.18

Finding the Fourth Proportional to 13,622.49, 18,800.78 and 8,316.18

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Solution

The fourth proportional to 13,622.49, 18,800.78 and 8,316.18 is: 11,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.49 : 18,800.78 = 8,316.18 : x
  2. Step 2: Convert to fraction form
    13,622.49/18,800.78 = 8,316.18/x
  3. Step 3: Cross multiply
    13,622.49x = 18,800.78 × 8,316.18
  4. Step 4: Simplify right side
    13,622.49x = 156,350,629.04
  5. Step 5: Solve for x
    x = 156,350,629.04/13,622.49
  6. Step 6: Final answer
    x = 11,477.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.