Home / 13,530.40-20,295.62-5,214.33

Finding the Fourth Proportional to 13,530.40, 20,295.62 and 5,214.33

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Solution

The fourth proportional to 13,530.40, 20,295.62 and 5,214.33 is: 7,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.40 : 20,295.62 = 5,214.33 : x
  2. Step 2: Convert to fraction form
    13,530.40/20,295.62 = 5,214.33/x
  3. Step 3: Cross multiply
    13,530.40x = 20,295.62 × 5,214.33
  4. Step 4: Simplify right side
    13,530.40x = 105,828,073.27
  5. Step 5: Solve for x
    x = 105,828,073.27/13,530.40
  6. Step 6: Final answer
    x = 7,821.51

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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.