Home / 13,679.04-20,521.12-4,443.84

Finding the Fourth Proportional to 13,679.04, 20,521.12 and 4,443.84

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Solution

The fourth proportional to 13,679.04, 20,521.12 and 4,443.84 is: 6,666.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.04 : 20,521.12 = 4,443.84 : x
  2. Step 2: Convert to fraction form
    13,679.04/20,521.12 = 4,443.84/x
  3. Step 3: Cross multiply
    13,679.04x = 20,521.12 × 4,443.84
  4. Step 4: Simplify right side
    13,679.04x = 91,192,573.90
  5. Step 5: Solve for x
    x = 91,192,573.90/13,679.04
  6. Step 6: Final answer
    x = 6,666.59

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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.