Home / 30,142.06-45,202.68-12,367.70

Finding the Fourth Proportional to 30,142.06, 45,202.68 and 12,367.70

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Solution

The fourth proportional to 30,142.06, 45,202.68 and 12,367.70 is: 18,547.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,142.06 : 45,202.68 = 12,367.70 : x
  2. Step 2: Convert to fraction form
    30,142.06/45,202.68 = 12,367.70/x
  3. Step 3: Cross multiply
    30,142.06x = 45,202.68 × 12,367.70
  4. Step 4: Simplify right side
    30,142.06x = 559,053,185.44
  5. Step 5: Solve for x
    x = 559,053,185.44/30,142.06
  6. Step 6: Final answer
    x = 18,547.28

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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.