Home / 28,265.40-39,006.32-15,519.41

Finding the Fourth Proportional to 28,265.40, 39,006.32 and 15,519.41

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Solution

The fourth proportional to 28,265.40, 39,006.32 and 15,519.41 is: 21,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.40 : 39,006.32 = 15,519.41 : x
  2. Step 2: Convert to fraction form
    28,265.40/39,006.32 = 15,519.41/x
  3. Step 3: Cross multiply
    28,265.40x = 39,006.32 × 15,519.41
  4. Step 4: Simplify right side
    28,265.40x = 605,354,945.73
  5. Step 5: Solve for x
    x = 605,354,945.73/28,265.40
  6. Step 6: Final answer
    x = 21,416.82

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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.