Home / 30,106.21-45,150.81-18,996.25

Finding the Fourth Proportional to 30,106.21, 45,150.81 and 18,996.25

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Solution

The fourth proportional to 30,106.21, 45,150.81 and 18,996.25 is: 28,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,106.21 : 45,150.81 = 18,996.25 : x
  2. Step 2: Convert to fraction form
    30,106.21/45,150.81 = 18,996.25/x
  3. Step 3: Cross multiply
    30,106.21x = 45,150.81 × 18,996.25
  4. Step 4: Simplify right side
    30,106.21x = 857,695,890.35
  5. Step 5: Solve for x
    x = 857,695,890.35/30,106.21
  6. Step 6: Final answer
    x = 28,489.00

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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.