Home / 13,371.04-20,077.30-12,779.42

Finding the Fourth Proportional to 13,371.04, 20,077.30 and 12,779.42

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Solution

The fourth proportional to 13,371.04, 20,077.30 and 12,779.42 is: 19,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.04 : 20,077.30 = 12,779.42 : x
  2. Step 2: Convert to fraction form
    13,371.04/20,077.30 = 12,779.42/x
  3. Step 3: Cross multiply
    13,371.04x = 20,077.30 × 12,779.42
  4. Step 4: Simplify right side
    13,371.04x = 256,576,249.17
  5. Step 5: Solve for x
    x = 256,576,249.17/13,371.04
  6. Step 6: Final answer
    x = 19,188.95

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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.