Home / 28,655.40-39,542.46-15,907.58

Finding the Fourth Proportional to 28,655.40, 39,542.46 and 15,907.58

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Solution

The fourth proportional to 28,655.40, 39,542.46 and 15,907.58 is: 21,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.40 : 39,542.46 = 15,907.58 : x
  2. Step 2: Convert to fraction form
    28,655.40/39,542.46 = 15,907.58/x
  3. Step 3: Cross multiply
    28,655.40x = 39,542.46 × 15,907.58
  4. Step 4: Simplify right side
    28,655.40x = 629,024,845.85
  5. Step 5: Solve for x
    x = 629,024,845.85/28,655.40
  6. Step 6: Final answer
    x = 21,951.35

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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.