Home / 28,265.90-39,006.76-15,519.31

Finding the Fourth Proportional to 28,265.90, 39,006.76 and 15,519.31

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Solution

The fourth proportional to 28,265.90, 39,006.76 and 15,519.31 is: 21,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.90 : 39,006.76 = 15,519.31 : x
  2. Step 2: Convert to fraction form
    28,265.90/39,006.76 = 15,519.31/x
  3. Step 3: Cross multiply
    28,265.90x = 39,006.76 × 15,519.31
  4. Step 4: Simplify right side
    28,265.90x = 605,357,805.50
  5. Step 5: Solve for x
    x = 605,357,805.50/28,265.90
  6. Step 6: Final answer
    x = 21,416.54

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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.