Home / 13,240.53-19,860.80-5,443.88

Finding the Fourth Proportional to 13,240.53, 19,860.80 and 5,443.88

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Solution

The fourth proportional to 13,240.53, 19,860.80 and 5,443.88 is: 8,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.53 : 19,860.80 = 5,443.88 : x
  2. Step 2: Convert to fraction form
    13,240.53/19,860.80 = 5,443.88/x
  3. Step 3: Cross multiply
    13,240.53x = 19,860.80 × 5,443.88
  4. Step 4: Simplify right side
    13,240.53x = 108,119,685.38
  5. Step 5: Solve for x
    x = 108,119,685.38/13,240.53
  6. Step 6: Final answer
    x = 8,165.81

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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.