Home / 20,574.30-30,783.45-13,662.30

Finding the Fourth Proportional to 20,574.30, 30,783.45 and 13,662.30

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Solution

The fourth proportional to 20,574.30, 30,783.45 and 13,662.30 is: 20,441.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.30 : 30,783.45 = 13,662.30 : x
  2. Step 2: Convert to fraction form
    20,574.30/30,783.45 = 13,662.30/x
  3. Step 3: Cross multiply
    20,574.30x = 30,783.45 × 13,662.30
  4. Step 4: Simplify right side
    20,574.30x = 420,572,728.94
  5. Step 5: Solve for x
    x = 420,572,728.94/20,574.30
  6. Step 6: Final answer
    x = 20,441.65

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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.