Home / 13,021.35-19,533.18-3,661.45

Finding the Fourth Proportional to 13,021.35, 19,533.18 and 3,661.45

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Solution

The fourth proportional to 13,021.35, 19,533.18 and 3,661.45 is: 5,492.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.35 : 19,533.18 = 3,661.45 : x
  2. Step 2: Convert to fraction form
    13,021.35/19,533.18 = 3,661.45/x
  3. Step 3: Cross multiply
    13,021.35x = 19,533.18 × 3,661.45
  4. Step 4: Simplify right side
    13,021.35x = 71,519,761.91
  5. Step 5: Solve for x
    x = 71,519,761.91/13,021.35
  6. Step 6: Final answer
    x = 5,492.50

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Double scale
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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.