Home / 13,618.06-20,421.82-5,296.94

Finding the Fourth Proportional to 13,618.06, 20,421.82 and 5,296.94

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Solution

The fourth proportional to 13,618.06, 20,421.82 and 5,296.94 is: 7,943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.06 : 20,421.82 = 5,296.94 : x
  2. Step 2: Convert to fraction form
    13,618.06/20,421.82 = 5,296.94/x
  3. Step 3: Cross multiply
    13,618.06x = 20,421.82 × 5,296.94
  4. Step 4: Simplify right side
    13,618.06x = 108,173,155.23
  5. Step 5: Solve for x
    x = 108,173,155.23/13,618.06
  6. Step 6: Final answer
    x = 7,943.36

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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.