Home / 13,779.44-20,661.96-7,189.52

Finding the Fourth Proportional to 13,779.44, 20,661.96 and 7,189.52

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Solution

The fourth proportional to 13,779.44, 20,661.96 and 7,189.52 is: 10,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.44 : 20,661.96 = 7,189.52 : x
  2. Step 2: Convert to fraction form
    13,779.44/20,661.96 = 7,189.52/x
  3. Step 3: Cross multiply
    13,779.44x = 20,661.96 × 7,189.52
  4. Step 4: Simplify right side
    13,779.44x = 148,549,574.66
  5. Step 5: Solve for x
    x = 148,549,574.66/13,779.44
  6. Step 6: Final answer
    x = 10,780.52

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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.