Home / 28,519.85-42,779.77-7,743.35

Finding the Fourth Proportional to 28,519.85, 42,779.77 and 7,743.35

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Solution

The fourth proportional to 28,519.85, 42,779.77 and 7,743.35 is: 11,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.85 : 42,779.77 = 7,743.35 : x
  2. Step 2: Convert to fraction form
    28,519.85/42,779.77 = 7,743.35/x
  3. Step 3: Cross multiply
    28,519.85x = 42,779.77 × 7,743.35
  4. Step 4: Simplify right side
    28,519.85x = 331,258,537.49
  5. Step 5: Solve for x
    x = 331,258,537.49/28,519.85
  6. Step 6: Final answer
    x = 11,615.02

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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.