Home / 28,371.75-39,153.29-15,796.77

Finding the Fourth Proportional to 28,371.75, 39,153.29 and 15,796.77

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Solution

The fourth proportional to 28,371.75, 39,153.29 and 15,796.77 is: 21,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.75 : 39,153.29 = 15,796.77 : x
  2. Step 2: Convert to fraction form
    28,371.75/39,153.29 = 15,796.77/x
  3. Step 3: Cross multiply
    28,371.75x = 39,153.29 × 15,796.77
  4. Step 4: Simplify right side
    28,371.75x = 618,495,437.89
  5. Step 5: Solve for x
    x = 618,495,437.89/28,371.75
  6. Step 6: Final answer
    x = 21,799.69

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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.