Home / 20,567.69-28,383.42-11,615.77

Finding the Fourth Proportional to 20,567.69, 28,383.42 and 11,615.77

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Solution

The fourth proportional to 20,567.69, 28,383.42 and 11,615.77 is: 16,029.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.69 : 28,383.42 = 11,615.77 : x
  2. Step 2: Convert to fraction form
    20,567.69/28,383.42 = 11,615.77/x
  3. Step 3: Cross multiply
    20,567.69x = 28,383.42 × 11,615.77
  4. Step 4: Simplify right side
    20,567.69x = 329,695,278.53
  5. Step 5: Solve for x
    x = 329,695,278.53/20,567.69
  6. Step 6: Final answer
    x = 16,029.77

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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.