Home / 28,690.88-39,597.12-16,115.63

Finding the Fourth Proportional to 28,690.88, 39,597.12 and 16,115.63

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Solution

The fourth proportional to 28,690.88, 39,597.12 and 16,115.63 is: 22,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.88 : 39,597.12 = 16,115.63 : x
  2. Step 2: Convert to fraction form
    28,690.88/39,597.12 = 16,115.63/x
  3. Step 3: Cross multiply
    28,690.88x = 39,597.12 × 16,115.63
  4. Step 4: Simplify right side
    28,690.88x = 638,132,337
  5. Step 5: Solve for x
    x = 638,132,337/28,690.88
  6. Step 6: Final answer
    x = 22,241.65

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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.