Home / 30,360.85-45,527.90-13,720.21

Finding the Fourth Proportional to 30,360.85, 45,527.90 and 13,720.21

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Solution

The fourth proportional to 30,360.85, 45,527.90 and 13,720.21 is: 20,574.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,360.85 : 45,527.90 = 13,720.21 : x
  2. Step 2: Convert to fraction form
    30,360.85/45,527.90 = 13,720.21/x
  3. Step 3: Cross multiply
    30,360.85x = 45,527.90 × 13,720.21
  4. Step 4: Simplify right side
    30,360.85x = 624,652,166.44
  5. Step 5: Solve for x
    x = 624,652,166.44/30,360.85
  6. Step 6: Final answer
    x = 20,574.27

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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.