Home / 13,005.88-19,508.60-3,145.08

Finding the Fourth Proportional to 13,005.88, 19,508.60 and 3,145.08

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Solution

The fourth proportional to 13,005.88, 19,508.60 and 3,145.08 is: 4,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.88 : 19,508.60 = 3,145.08 : x
  2. Step 2: Convert to fraction form
    13,005.88/19,508.60 = 3,145.08/x
  3. Step 3: Cross multiply
    13,005.88x = 19,508.60 × 3,145.08
  4. Step 4: Simplify right side
    13,005.88x = 61,356,107.69
  5. Step 5: Solve for x
    x = 61,356,107.69/13,005.88
  6. Step 6: Final answer
    x = 4,717.57

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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.