Home / 20,148.40-30,191.80-13,550.16

Finding the Fourth Proportional to 20,148.40, 30,191.80 and 13,550.16

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Solution

The fourth proportional to 20,148.40, 30,191.80 and 13,550.16 is: 20,304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.40 : 30,191.80 = 13,550.16 : x
  2. Step 2: Convert to fraction form
    20,148.40/30,191.80 = 13,550.16/x
  3. Step 3: Cross multiply
    20,148.40x = 30,191.80 × 13,550.16
  4. Step 4: Simplify right side
    20,148.40x = 409,103,720.69
  5. Step 5: Solve for x
    x = 409,103,720.69/20,148.40
  6. Step 6: Final answer
    x = 20,304.53

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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.