Home / 14,519.55-21,779.21-3,989.55

Finding the Fourth Proportional to 14,519.55, 21,779.21 and 3,989.55

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Solution

The fourth proportional to 14,519.55, 21,779.21 and 3,989.55 is: 5,984.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,519.55 : 21,779.21 = 3,989.55 : x
  2. Step 2: Convert to fraction form
    14,519.55/21,779.21 = 3,989.55/x
  3. Step 3: Cross multiply
    14,519.55x = 21,779.21 × 3,989.55
  4. Step 4: Simplify right side
    14,519.55x = 86,889,247.26
  5. Step 5: Solve for x
    x = 86,889,247.26/14,519.55
  6. Step 6: Final answer
    x = 5,984.29

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Double scale
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Similar ratio
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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.