Home / 28,649.98-39,539.34-15,904.36

Finding the Fourth Proportional to 28,649.98, 39,539.34 and 15,904.36

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Solution

The fourth proportional to 28,649.98, 39,539.34 and 15,904.36 is: 21,949.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.98 : 39,539.34 = 15,904.36 : x
  2. Step 2: Convert to fraction form
    28,649.98/39,539.34 = 15,904.36/x
  3. Step 3: Cross multiply
    28,649.98x = 39,539.34 × 15,904.36
  4. Step 4: Simplify right side
    28,649.98x = 628,847,897.52
  5. Step 5: Solve for x
    x = 628,847,897.52/28,649.98
  6. Step 6: Final answer
    x = 21,949.33

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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.