Home / 40,779.28-61,162.37-11,190.20

Finding the Fourth Proportional to 40,779.28, 61,162.37 and 11,190.20

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Solution

The fourth proportional to 40,779.28, 61,162.37 and 11,190.20 is: 16,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,779.28 : 61,162.37 = 11,190.20 : x
  2. Step 2: Convert to fraction form
    40,779.28/61,162.37 = 11,190.20/x
  3. Step 3: Cross multiply
    40,779.28x = 61,162.37 × 11,190.20
  4. Step 4: Simplify right side
    40,779.28x = 684,419,096.82
  5. Step 5: Solve for x
    x = 684,419,096.82/40,779.28
  6. Step 6: Final answer
    x = 16,783.50

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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.