Home / 28,452.88-39,265-15,877.62

Finding the Fourth Proportional to 28,452.88, 39,265 and 15,877.62

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Solution

The fourth proportional to 28,452.88, 39,265 and 15,877.62 is: 21,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.88 : 39,265 = 15,877.62 : x
  2. Step 2: Convert to fraction form
    28,452.88/39,265 = 15,877.62/x
  3. Step 3: Cross multiply
    28,452.88x = 39,265 × 15,877.62
  4. Step 4: Simplify right side
    28,452.88x = 623,434,749.30
  5. Step 5: Solve for x
    x = 623,434,749.30/28,452.88
  6. Step 6: Final answer
    x = 21,911.13

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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.