Home / 30,005.10-45,007.65-18,195.30

Finding the Fourth Proportional to 30,005.10, 45,007.65 and 18,195.30

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Solution

The fourth proportional to 30,005.10, 45,007.65 and 18,195.30 is: 27,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.10 : 45,007.65 = 18,195.30 : x
  2. Step 2: Convert to fraction form
    30,005.10/45,007.65 = 18,195.30/x
  3. Step 3: Cross multiply
    30,005.10x = 45,007.65 × 18,195.30
  4. Step 4: Simplify right side
    30,005.10x = 818,927,694.05
  5. Step 5: Solve for x
    x = 818,927,694.05/30,005.10
  6. Step 6: Final answer
    x = 27,292.95

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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.