Home / 19,980.45-29,967.84-6,830.91

Finding the Fourth Proportional to 19,980.45, 29,967.84 and 6,830.91

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Solution

The fourth proportional to 19,980.45, 29,967.84 and 6,830.91 is: 10,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.45 : 29,967.84 = 6,830.91 : x
  2. Step 2: Convert to fraction form
    19,980.45/29,967.84 = 6,830.91/x
  3. Step 3: Cross multiply
    19,980.45x = 29,967.84 × 6,830.91
  4. Step 4: Simplify right side
    19,980.45x = 204,707,617.93
  5. Step 5: Solve for x
    x = 204,707,617.93/19,980.45
  6. Step 6: Final answer
    x = 10,245.40

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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.