Home / 20,567.61-28,383.30-11,615.72

Finding the Fourth Proportional to 20,567.61, 28,383.30 and 11,615.72

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Solution

The fourth proportional to 20,567.61, 28,383.30 and 11,615.72 is: 16,029.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.61 : 28,383.30 = 11,615.72 : x
  2. Step 2: Convert to fraction form
    20,567.61/28,383.30 = 11,615.72/x
  3. Step 3: Cross multiply
    20,567.61x = 28,383.30 × 11,615.72
  4. Step 4: Simplify right side
    20,567.61x = 329,692,323.56
  5. Step 5: Solve for x
    x = 329,692,323.56/20,567.61
  6. Step 6: Final answer
    x = 16,029.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.