Home / 30,203.10-45,288.45-12,653.10

Finding the Fourth Proportional to 30,203.10, 45,288.45 and 12,653.10

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Solution

The fourth proportional to 30,203.10, 45,288.45 and 12,653.10 is: 18,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,203.10 : 45,288.45 = 12,653.10 : x
  2. Step 2: Convert to fraction form
    30,203.10/45,288.45 = 12,653.10/x
  3. Step 3: Cross multiply
    30,203.10x = 45,288.45 × 12,653.10
  4. Step 4: Simplify right side
    30,203.10x = 573,039,286.70
  5. Step 5: Solve for x
    x = 573,039,286.70/30,203.10
  6. Step 6: Final answer
    x = 18,972.86

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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.