Home / 20,772.39-28,666.50-11,341.56

Finding the Fourth Proportional to 20,772.39, 28,666.50 and 11,341.56

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Solution

The fourth proportional to 20,772.39, 28,666.50 and 11,341.56 is: 15,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.39 : 28,666.50 = 11,341.56 : x
  2. Step 2: Convert to fraction form
    20,772.39/28,666.50 = 11,341.56/x
  3. Step 3: Cross multiply
    20,772.39x = 28,666.50 × 11,341.56
  4. Step 4: Simplify right side
    20,772.39x = 325,122,829.74
  5. Step 5: Solve for x
    x = 325,122,829.74/20,772.39
  6. Step 6: Final answer
    x = 15,651.68

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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.