Home / 20,609.19-28,432.58-13,447.49

Finding the Fourth Proportional to 20,609.19, 28,432.58 and 13,447.49

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Solution

The fourth proportional to 20,609.19, 28,432.58 and 13,447.49 is: 18,552.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.19 : 28,432.58 = 13,447.49 : x
  2. Step 2: Convert to fraction form
    20,609.19/28,432.58 = 13,447.49/x
  3. Step 3: Cross multiply
    20,609.19x = 28,432.58 × 13,447.49
  4. Step 4: Simplify right side
    20,609.19x = 382,346,625.82
  5. Step 5: Solve for x
    x = 382,346,625.82/20,609.19
  6. Step 6: Final answer
    x = 18,552.24

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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.