Home / 19,964.70-29,950.65-8,279.10

Finding the Fourth Proportional to 19,964.70, 29,950.65 and 8,279.10

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Solution

The fourth proportional to 19,964.70, 29,950.65 and 8,279.10 is: 12,420.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.70 : 29,950.65 = 8,279.10 : x
  2. Step 2: Convert to fraction form
    19,964.70/29,950.65 = 8,279.10/x
  3. Step 3: Cross multiply
    19,964.70x = 29,950.65 × 8,279.10
  4. Step 4: Simplify right side
    19,964.70x = 247,964,426.42
  5. Step 5: Solve for x
    x = 247,964,426.42/19,964.70
  6. Step 6: Final answer
    x = 12,420.14

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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.