Home / 30,121.17-45,120.20-14,087.76

Finding the Fourth Proportional to 30,121.17, 45,120.20 and 14,087.76

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Solution

The fourth proportional to 30,121.17, 45,120.20 and 14,087.76 is: 21,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.17 : 45,120.20 = 14,087.76 : x
  2. Step 2: Convert to fraction form
    30,121.17/45,120.20 = 14,087.76/x
  3. Step 3: Cross multiply
    30,121.17x = 45,120.20 × 14,087.76
  4. Step 4: Simplify right side
    30,121.17x = 635,642,478.31
  5. Step 5: Solve for x
    x = 635,642,478.31/30,121.17
  6. Step 6: Final answer
    x = 21,102.85

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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.