Home / 20,575.69-28,394.65-11,144.45

Finding the Fourth Proportional to 20,575.69, 28,394.65 and 11,144.45

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Solution

The fourth proportional to 20,575.69, 28,394.65 and 11,144.45 is: 15,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.69 : 28,394.65 = 11,144.45 : x
  2. Step 2: Convert to fraction form
    20,575.69/28,394.65 = 11,144.45/x
  3. Step 3: Cross multiply
    20,575.69x = 28,394.65 × 11,144.45
  4. Step 4: Simplify right side
    20,575.69x = 316,442,842.11
  5. Step 5: Solve for x
    x = 316,442,842.11/20,575.69
  6. Step 6: Final answer
    x = 15,379.45

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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.