Home / 13,135.99-19,705.20-5,236.59

Finding the Fourth Proportional to 13,135.99, 19,705.20 and 5,236.59

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Solution

The fourth proportional to 13,135.99, 19,705.20 and 5,236.59 is: 7,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.99 : 19,705.20 = 5,236.59 : x
  2. Step 2: Convert to fraction form
    13,135.99/19,705.20 = 5,236.59/x
  3. Step 3: Cross multiply
    13,135.99x = 19,705.20 × 5,236.59
  4. Step 4: Simplify right side
    13,135.99x = 103,187,954.74
  5. Step 5: Solve for x
    x = 103,187,954.74/13,135.99
  6. Step 6: Final answer
    x = 7,855.36

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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.