Home / 18,813.78-28,209.87-5,662.26

Finding the Fourth Proportional to 18,813.78, 28,209.87 and 5,662.26

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Solution

The fourth proportional to 18,813.78, 28,209.87 and 5,662.26 is: 8,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.78 : 28,209.87 = 5,662.26 : x
  2. Step 2: Convert to fraction form
    18,813.78/28,209.87 = 5,662.26/x
  3. Step 3: Cross multiply
    18,813.78x = 28,209.87 × 5,662.26
  4. Step 4: Simplify right side
    18,813.78x = 159,731,618.51
  5. Step 5: Solve for x
    x = 159,731,618.51/18,813.78
  6. Step 6: Final answer
    x = 8,490.14

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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.