Home / 20,698.31-28,566.20-11,748.62

Finding the Fourth Proportional to 20,698.31, 28,566.20 and 11,748.62

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Solution

The fourth proportional to 20,698.31, 28,566.20 and 11,748.62 is: 16,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.31 : 28,566.20 = 11,748.62 : x
  2. Step 2: Convert to fraction form
    20,698.31/28,566.20 = 11,748.62/x
  3. Step 3: Cross multiply
    20,698.31x = 28,566.20 × 11,748.62
  4. Step 4: Simplify right side
    20,698.31x = 335,613,428.64
  5. Step 5: Solve for x
    x = 335,613,428.64/20,698.31
  6. Step 6: Final answer
    x = 16,214.53

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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.