Home / 55,429.21-83,143.58-13,876.09

Finding the Fourth Proportional to 55,429.21, 83,143.58 and 13,876.09

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Solution

The fourth proportional to 55,429.21, 83,143.58 and 13,876.09 is: 20,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,429.21 : 83,143.58 = 13,876.09 : x
  2. Step 2: Convert to fraction form
    55,429.21/83,143.58 = 13,876.09/x
  3. Step 3: Cross multiply
    55,429.21x = 83,143.58 × 13,876.09
  4. Step 4: Simplify right side
    55,429.21x = 1,153,707,729.62
  5. Step 5: Solve for x
    x = 1,153,707,729.62/55,429.21
  6. Step 6: Final answer
    x = 20,814.07

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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.