Home / 38,779.20-58,168.80-11,077.20

Finding the Fourth Proportional to 38,779.20, 58,168.80 and 11,077.20

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Solution

The fourth proportional to 38,779.20, 58,168.80 and 11,077.20 is: 16,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779.20 : 58,168.80 = 11,077.20 : x
  2. Step 2: Convert to fraction form
    38,779.20/58,168.80 = 11,077.20/x
  3. Step 3: Cross multiply
    38,779.20x = 58,168.80 × 11,077.20
  4. Step 4: Simplify right side
    38,779.20x = 644,347,431.36
  5. Step 5: Solve for x
    x = 644,347,431.36/38,779.20
  6. Step 6: Final answer
    x = 16,615.80

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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.