Home / 20,356.16-30,534.66-13,380.65

Finding the Fourth Proportional to 20,356.16, 30,534.66 and 13,380.65

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Solution

The fourth proportional to 20,356.16, 30,534.66 and 13,380.65 is: 20,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.16 : 30,534.66 = 13,380.65 : x
  2. Step 2: Convert to fraction form
    20,356.16/30,534.66 = 13,380.65/x
  3. Step 3: Cross multiply
    20,356.16x = 30,534.66 × 13,380.65
  4. Step 4: Simplify right side
    20,356.16x = 408,573,598.33
  5. Step 5: Solve for x
    x = 408,573,598.33/20,356.16
  6. Step 6: Final answer
    x = 20,071.25

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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.