Home / 20,590.77-30,890.61-6,555.09

Finding the Fourth Proportional to 20,590.77, 30,890.61 and 6,555.09

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Solution

The fourth proportional to 20,590.77, 30,890.61 and 6,555.09 is: 9,834.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.77 : 30,890.61 = 6,555.09 : x
  2. Step 2: Convert to fraction form
    20,590.77/30,890.61 = 6,555.09/x
  3. Step 3: Cross multiply
    20,590.77x = 30,890.61 × 6,555.09
  4. Step 4: Simplify right side
    20,590.77x = 202,490,728.70
  5. Step 5: Solve for x
    x = 202,490,728.70/20,590.77
  6. Step 6: Final answer
    x = 9,834.05

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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.