Home / 28,109.21-38,793.17-15,536.39

Finding the Fourth Proportional to 28,109.21, 38,793.17 and 15,536.39

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Solution

The fourth proportional to 28,109.21, 38,793.17 and 15,536.39 is: 21,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.21 : 38,793.17 = 15,536.39 : x
  2. Step 2: Convert to fraction form
    28,109.21/38,793.17 = 15,536.39/x
  3. Step 3: Cross multiply
    28,109.21x = 38,793.17 × 15,536.39
  4. Step 4: Simplify right side
    28,109.21x = 602,705,818.46
  5. Step 5: Solve for x
    x = 602,705,818.46/28,109.21
  6. Step 6: Final answer
    x = 21,441.58

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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.