Home / 20,356.42-30,535.02-13,380.96

Finding the Fourth Proportional to 20,356.42, 30,535.02 and 13,380.96

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Solution

The fourth proportional to 20,356.42, 30,535.02 and 13,380.96 is: 20,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.42 : 30,535.02 = 13,380.96 : x
  2. Step 2: Convert to fraction form
    20,356.42/30,535.02 = 13,380.96/x
  3. Step 3: Cross multiply
    20,356.42x = 30,535.02 × 13,380.96
  4. Step 4: Simplify right side
    20,356.42x = 408,587,881.22
  5. Step 5: Solve for x
    x = 408,587,881.22/20,356.42
  6. Step 6: Final answer
    x = 20,071.70

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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.