Home / 28,446.67-39,256.32-15,871.42

Finding the Fourth Proportional to 28,446.67, 39,256.32 and 15,871.42

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Solution

The fourth proportional to 28,446.67, 39,256.32 and 15,871.42 is: 21,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.67 : 39,256.32 = 15,871.42 : x
  2. Step 2: Convert to fraction form
    28,446.67/39,256.32 = 15,871.42/x
  3. Step 3: Cross multiply
    28,446.67x = 39,256.32 × 15,871.42
  4. Step 4: Simplify right side
    28,446.67x = 623,053,542.37
  5. Step 5: Solve for x
    x = 623,053,542.37/28,446.67
  6. Step 6: Final answer
    x = 21,902.51

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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.