Home / 20,489.04-28,274.88-11,536.56

Finding the Fourth Proportional to 20,489.04, 28,274.88 and 11,536.56

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Solution

The fourth proportional to 20,489.04, 28,274.88 and 11,536.56 is: 15,920.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.04 : 28,274.88 = 11,536.56 : x
  2. Step 2: Convert to fraction form
    20,489.04/28,274.88 = 11,536.56/x
  3. Step 3: Cross multiply
    20,489.04x = 28,274.88 × 11,536.56
  4. Step 4: Simplify right side
    20,489.04x = 326,194,849.61
  5. Step 5: Solve for x
    x = 326,194,849.61/20,489.04
  6. Step 6: Final answer
    x = 15,920.46

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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.