Home / 20,580.69-28,402.46-11,628.57

Finding the Fourth Proportional to 20,580.69, 28,402.46 and 11,628.57

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Solution

The fourth proportional to 20,580.69, 28,402.46 and 11,628.57 is: 16,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.69 : 28,402.46 = 11,628.57 : x
  2. Step 2: Convert to fraction form
    20,580.69/28,402.46 = 11,628.57/x
  3. Step 3: Cross multiply
    20,580.69x = 28,402.46 × 11,628.57
  4. Step 4: Simplify right side
    20,580.69x = 330,279,994.28
  5. Step 5: Solve for x
    x = 330,279,994.28/20,580.69
  6. Step 6: Final answer
    x = 16,048.05

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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.