Home / 28,396.58-39,187.08-15,649.77

Finding the Fourth Proportional to 28,396.58, 39,187.08 and 15,649.77

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Solution

The fourth proportional to 28,396.58, 39,187.08 and 15,649.77 is: 21,596.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.58 : 39,187.08 = 15,649.77 : x
  2. Step 2: Convert to fraction form
    28,396.58/39,187.08 = 15,649.77/x
  3. Step 3: Cross multiply
    28,396.58x = 39,187.08 × 15,649.77
  4. Step 4: Simplify right side
    28,396.58x = 613,268,847.63
  5. Step 5: Solve for x
    x = 613,268,847.63/28,396.58
  6. Step 6: Final answer
    x = 21,596.57

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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.