Home / 30,126.28-45,179.02-12,351.90

Finding the Fourth Proportional to 30,126.28, 45,179.02 and 12,351.90

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Solution

The fourth proportional to 30,126.28, 45,179.02 and 12,351.90 is: 18,523.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.28 : 45,179.02 = 12,351.90 : x
  2. Step 2: Convert to fraction form
    30,126.28/45,179.02 = 12,351.90/x
  3. Step 3: Cross multiply
    30,126.28x = 45,179.02 × 12,351.90
  4. Step 4: Simplify right side
    30,126.28x = 558,046,737.14
  5. Step 5: Solve for x
    x = 558,046,737.14/30,126.28
  6. Step 6: Final answer
    x = 18,523.59

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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.