Home / 30,521.40-45,809.10-18,025.80

Finding the Fourth Proportional to 30,521.40, 45,809.10 and 18,025.80

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Solution

The fourth proportional to 30,521.40, 45,809.10 and 18,025.80 is: 27,054.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.40 : 45,809.10 = 18,025.80 : x
  2. Step 2: Convert to fraction form
    30,521.40/45,809.10 = 18,025.80/x
  3. Step 3: Cross multiply
    30,521.40x = 45,809.10 × 18,025.80
  4. Step 4: Simplify right side
    30,521.40x = 825,745,674.78
  5. Step 5: Solve for x
    x = 825,745,674.78/30,521.40
  6. Step 6: Final answer
    x = 27,054.65

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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.