Home / 13,382.30-20,074.59-3,521.63

Finding the Fourth Proportional to 13,382.30, 20,074.59 and 3,521.63

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Solution

The fourth proportional to 13,382.30, 20,074.59 and 3,521.63 is: 5,282.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.30 : 20,074.59 = 3,521.63 : x
  2. Step 2: Convert to fraction form
    13,382.30/20,074.59 = 3,521.63/x
  3. Step 3: Cross multiply
    13,382.30x = 20,074.59 × 3,521.63
  4. Step 4: Simplify right side
    13,382.30x = 70,695,278.38
  5. Step 5: Solve for x
    x = 70,695,278.38/13,382.30
  6. Step 6: Final answer
    x = 5,282.74

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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.