Home / 13,537.05-20,300.19-5,212.45

Finding the Fourth Proportional to 13,537.05, 20,300.19 and 5,212.45

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Solution

The fourth proportional to 13,537.05, 20,300.19 and 5,212.45 is: 7,816.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.05 : 20,300.19 = 5,212.45 : x
  2. Step 2: Convert to fraction form
    13,537.05/20,300.19 = 5,212.45/x
  3. Step 3: Cross multiply
    13,537.05x = 20,300.19 × 5,212.45
  4. Step 4: Simplify right side
    13,537.05x = 105,813,725.37
  5. Step 5: Solve for x
    x = 105,813,725.37/13,537.05
  6. Step 6: Final answer
    x = 7,816.60

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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.