Home / 20,913.57-28,860.62-11,962.62

Finding the Fourth Proportional to 20,913.57, 28,860.62 and 11,962.62

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Solution

The fourth proportional to 20,913.57, 28,860.62 and 11,962.62 is: 16,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.57 : 28,860.62 = 11,962.62 : x
  2. Step 2: Convert to fraction form
    20,913.57/28,860.62 = 11,962.62/x
  3. Step 3: Cross multiply
    20,913.57x = 28,860.62 × 11,962.62
  4. Step 4: Simplify right side
    20,913.57x = 345,248,570.21
  5. Step 5: Solve for x
    x = 345,248,570.21/20,913.57
  6. Step 6: Final answer
    x = 16,508.35

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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.