Home / 20,487.43-28,275.35-11,536.69

Finding the Fourth Proportional to 20,487.43, 28,275.35 and 11,536.69

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Solution

The fourth proportional to 20,487.43, 28,275.35 and 11,536.69 is: 15,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.43 : 28,275.35 = 11,536.69 : x
  2. Step 2: Convert to fraction form
    20,487.43/28,275.35 = 11,536.69/x
  3. Step 3: Cross multiply
    20,487.43x = 28,275.35 × 11,536.69
  4. Step 4: Simplify right side
    20,487.43x = 326,203,748.53
  5. Step 5: Solve for x
    x = 326,203,748.53/20,487.43
  6. Step 6: Final answer
    x = 15,922.14

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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.