Home / 20,090.72-30,119.06-12,283.13

Finding the Fourth Proportional to 20,090.72, 30,119.06 and 12,283.13

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Solution

The fourth proportional to 20,090.72, 30,119.06 and 12,283.13 is: 18,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.72 : 30,119.06 = 12,283.13 : x
  2. Step 2: Convert to fraction form
    20,090.72/30,119.06 = 12,283.13/x
  3. Step 3: Cross multiply
    20,090.72x = 30,119.06 × 12,283.13
  4. Step 4: Simplify right side
    20,090.72x = 369,956,117.45
  5. Step 5: Solve for x
    x = 369,956,117.45/20,090.72
  6. Step 6: Final answer
    x = 18,414.28

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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.