Home / 30,420.36-45,635.94-13,779.72

Finding the Fourth Proportional to 30,420.36, 45,635.94 and 13,779.72

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Solution

The fourth proportional to 30,420.36, 45,635.94 and 13,779.72 is: 20,672.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.36 : 45,635.94 = 13,779.72 : x
  2. Step 2: Convert to fraction form
    30,420.36/45,635.94 = 13,779.72/x
  3. Step 3: Cross multiply
    30,420.36x = 45,635.94 × 13,779.72
  4. Step 4: Simplify right side
    30,420.36x = 628,850,475.14
  5. Step 5: Solve for x
    x = 628,850,475.14/30,420.36
  6. Step 6: Final answer
    x = 20,672.03

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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.