Home / 30,286.40-45,397.20-13,643.60

Finding the Fourth Proportional to 30,286.40, 45,397.20 and 13,643.60

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Solution

The fourth proportional to 30,286.40, 45,397.20 and 13,643.60 is: 20,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286.40 : 45,397.20 = 13,643.60 : x
  2. Step 2: Convert to fraction form
    30,286.40/45,397.20 = 13,643.60/x
  3. Step 3: Cross multiply
    30,286.40x = 45,397.20 × 13,643.60
  4. Step 4: Simplify right side
    30,286.40x = 619,381,237.92
  5. Step 5: Solve for x
    x = 619,381,237.92/30,286.40
  6. Step 6: Final answer
    x = 20,450.80

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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.