Home / 18,358.35-27,538.59-5,209.70

Finding the Fourth Proportional to 18,358.35, 27,538.59 and 5,209.70

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Solution

The fourth proportional to 18,358.35, 27,538.59 and 5,209.70 is: 7,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.35 : 27,538.59 = 5,209.70 : x
  2. Step 2: Convert to fraction form
    18,358.35/27,538.59 = 5,209.70/x
  3. Step 3: Cross multiply
    18,358.35x = 27,538.59 × 5,209.70
  4. Step 4: Simplify right side
    18,358.35x = 143,467,654.63
  5. Step 5: Solve for x
    x = 143,467,654.63/18,358.35
  6. Step 6: Final answer
    x = 7,814.84

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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.