Home / 20,783.45-28,650.78-16,536.11

Finding the Fourth Proportional to 20,783.45, 28,650.78 and 16,536.11

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Solution

The fourth proportional to 20,783.45, 28,650.78 and 16,536.11 is: 22,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.45 : 28,650.78 = 16,536.11 : x
  2. Step 2: Convert to fraction form
    20,783.45/28,650.78 = 16,536.11/x
  3. Step 3: Cross multiply
    20,783.45x = 28,650.78 × 16,536.11
  4. Step 4: Simplify right side
    20,783.45x = 473,772,306.41
  5. Step 5: Solve for x
    x = 473,772,306.41/20,783.45
  6. Step 6: Final answer
    x = 22,795.66

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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.