Home / 30,207.40-45,311.10-18,527.20

Finding the Fourth Proportional to 30,207.40, 45,311.10 and 18,527.20

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Solution

The fourth proportional to 30,207.40, 45,311.10 and 18,527.20 is: 27,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.40 : 45,311.10 = 18,527.20 : x
  2. Step 2: Convert to fraction form
    30,207.40/45,311.10 = 18,527.20/x
  3. Step 3: Cross multiply
    30,207.40x = 45,311.10 × 18,527.20
  4. Step 4: Simplify right side
    30,207.40x = 839,487,811.92
  5. Step 5: Solve for x
    x = 839,487,811.92/30,207.40
  6. Step 6: Final answer
    x = 27,790.80

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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.