Home / 20,520-30,784.84-6,669.04

Finding the Fourth Proportional to 20,520, 30,784.84 and 6,669.04

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Solution

The fourth proportional to 20,520, 30,784.84 and 6,669.04 is: 10,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520 : 30,784.84 = 6,669.04 : x
  2. Step 2: Convert to fraction form
    20,520/30,784.84 = 6,669.04/x
  3. Step 3: Cross multiply
    20,520x = 30,784.84 × 6,669.04
  4. Step 4: Simplify right side
    20,520x = 205,305,329.35
  5. Step 5: Solve for x
    x = 205,305,329.35/20,520
  6. Step 6: Final answer
    x = 10,005.13

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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.