Home / 18,338.81-27,513.20-7,809.35

Finding the Fourth Proportional to 18,338.81, 27,513.20 and 7,809.35

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Solution

The fourth proportional to 18,338.81, 27,513.20 and 7,809.35 is: 11,716.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.81 : 27,513.20 = 7,809.35 : x
  2. Step 2: Convert to fraction form
    18,338.81/27,513.20 = 7,809.35/x
  3. Step 3: Cross multiply
    18,338.81x = 27,513.20 × 7,809.35
  4. Step 4: Simplify right side
    18,338.81x = 214,860,090.38
  5. Step 5: Solve for x
    x = 214,860,090.38/18,338.81
  6. Step 6: Final answer
    x = 11,716.14

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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.