Home / 28,217.22-38,938.14-15,467.94

Finding the Fourth Proportional to 28,217.22, 38,938.14 and 15,467.94

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Solution

The fourth proportional to 28,217.22, 38,938.14 and 15,467.94 is: 21,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.22 : 38,938.14 = 15,467.94 : x
  2. Step 2: Convert to fraction form
    28,217.22/38,938.14 = 15,467.94/x
  3. Step 3: Cross multiply
    28,217.22x = 38,938.14 × 15,467.94
  4. Step 4: Simplify right side
    28,217.22x = 602,292,813.23
  5. Step 5: Solve for x
    x = 602,292,813.23/28,217.22
  6. Step 6: Final answer
    x = 21,344.87

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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.