Home / 20,487.69-28,275.71-11,536.94

Finding the Fourth Proportional to 20,487.69, 28,275.71 and 11,536.94

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Solution

The fourth proportional to 20,487.69, 28,275.71 and 11,536.94 is: 15,922.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.69 : 28,275.71 = 11,536.94 : x
  2. Step 2: Convert to fraction form
    20,487.69/28,275.71 = 11,536.94/x
  3. Step 3: Cross multiply
    20,487.69x = 28,275.71 × 11,536.94
  4. Step 4: Simplify right side
    20,487.69x = 326,215,182.73
  5. Step 5: Solve for x
    x = 326,215,182.73/20,487.69
  6. Step 6: Final answer
    x = 15,922.50

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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.