Home / 20,145.63-30,218.85-9,616.89

Finding the Fourth Proportional to 20,145.63, 30,218.85 and 9,616.89

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Solution

The fourth proportional to 20,145.63, 30,218.85 and 9,616.89 is: 14,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.63 : 30,218.85 = 9,616.89 : x
  2. Step 2: Convert to fraction form
    20,145.63/30,218.85 = 9,616.89/x
  3. Step 3: Cross multiply
    20,145.63x = 30,218.85 × 9,616.89
  4. Step 4: Simplify right side
    20,145.63x = 290,611,356.38
  5. Step 5: Solve for x
    x = 290,611,356.38/20,145.63
  6. Step 6: Final answer
    x = 14,425.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.