Home / 13,521.57-20,282.38-3,526.31

Finding the Fourth Proportional to 13,521.57, 20,282.38 and 3,526.31

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Solution

The fourth proportional to 13,521.57, 20,282.38 and 3,526.31 is: 5,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.57 : 20,282.38 = 3,526.31 : x
  2. Step 2: Convert to fraction form
    13,521.57/20,282.38 = 3,526.31/x
  3. Step 3: Cross multiply
    13,521.57x = 20,282.38 × 3,526.31
  4. Step 4: Simplify right side
    13,521.57x = 71,521,992.49
  5. Step 5: Solve for x
    x = 71,521,992.49/13,521.57
  6. Step 6: Final answer
    x = 5,289.47

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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.