Home / 13,610.52-20,333.09-8,640.36

Finding the Fourth Proportional to 13,610.52, 20,333.09 and 8,640.36

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Solution

The fourth proportional to 13,610.52, 20,333.09 and 8,640.36 is: 12,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.52 : 20,333.09 = 8,640.36 : x
  2. Step 2: Convert to fraction form
    13,610.52/20,333.09 = 8,640.36/x
  3. Step 3: Cross multiply
    13,610.52x = 20,333.09 × 8,640.36
  4. Step 4: Simplify right side
    13,610.52x = 175,685,217.51
  5. Step 5: Solve for x
    x = 175,685,217.51/13,610.52
  6. Step 6: Final answer
    x = 12,908.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.