Home / 13,521.08-20,278.49-3,661.12

Finding the Fourth Proportional to 13,521.08, 20,278.49 and 3,661.12

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Solution

The fourth proportional to 13,521.08, 20,278.49 and 3,661.12 is: 5,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.08 : 20,278.49 = 3,661.12 : x
  2. Step 2: Convert to fraction form
    13,521.08/20,278.49 = 3,661.12/x
  3. Step 3: Cross multiply
    13,521.08x = 20,278.49 × 3,661.12
  4. Step 4: Simplify right side
    13,521.08x = 74,241,985.31
  5. Step 5: Solve for x
    x = 74,241,985.31/13,521.08
  6. Step 6: Final answer
    x = 5,490.83

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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.