Home / 20,489.43-28,276.31-11,536.93

Finding the Fourth Proportional to 20,489.43, 28,276.31 and 11,536.93

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Solution

The fourth proportional to 20,489.43, 28,276.31 and 11,536.93 is: 15,921.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.43 : 28,276.31 = 11,536.93 : x
  2. Step 2: Convert to fraction form
    20,489.43/28,276.31 = 11,536.93/x
  3. Step 3: Cross multiply
    20,489.43x = 28,276.31 × 11,536.93
  4. Step 4: Simplify right side
    20,489.43x = 326,221,809.13
  5. Step 5: Solve for x
    x = 326,221,809.13/20,489.43
  6. Step 6: Final answer
    x = 15,921.47

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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.