Home / 20,145.47-30,218.16-6,997.95

Finding the Fourth Proportional to 20,145.47, 30,218.16 and 6,997.95

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Solution

The fourth proportional to 20,145.47, 30,218.16 and 6,997.95 is: 10,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.47 : 30,218.16 = 6,997.95 : x
  2. Step 2: Convert to fraction form
    20,145.47/30,218.16 = 6,997.95/x
  3. Step 3: Cross multiply
    20,145.47x = 30,218.16 × 6,997.95
  4. Step 4: Simplify right side
    20,145.47x = 211,465,172.77
  5. Step 5: Solve for x
    x = 211,465,172.77/20,145.47
  6. Step 6: Final answer
    x = 10,496.91

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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.