Home / 18,358.90-27,537.88-5,211.28

Finding the Fourth Proportional to 18,358.90, 27,537.88 and 5,211.28

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Solution

The fourth proportional to 18,358.90, 27,537.88 and 5,211.28 is: 7,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.90 : 27,537.88 = 5,211.28 : x
  2. Step 2: Convert to fraction form
    18,358.90/27,537.88 = 5,211.28/x
  3. Step 3: Cross multiply
    18,358.90x = 27,537.88 × 5,211.28
  4. Step 4: Simplify right side
    18,358.90x = 143,507,603.29
  5. Step 5: Solve for x
    x = 143,507,603.29/18,358.90
  6. Step 6: Final answer
    x = 7,816.79

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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.