Home / 18,465.21-27,695.38-5,139.09

Finding the Fourth Proportional to 18,465.21, 27,695.38 and 5,139.09

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Solution

The fourth proportional to 18,465.21, 27,695.38 and 5,139.09 is: 7,707.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.21 : 27,695.38 = 5,139.09 : x
  2. Step 2: Convert to fraction form
    18,465.21/27,695.38 = 5,139.09/x
  3. Step 3: Cross multiply
    18,465.21x = 27,695.38 × 5,139.09
  4. Step 4: Simplify right side
    18,465.21x = 142,329,050.40
  5. Step 5: Solve for x
    x = 142,329,050.40/18,465.21
  6. Step 6: Final answer
    x = 7,707.96

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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.