Home / 19,516.40-29,269.20-7,830.80

Finding the Fourth Proportional to 19,516.40, 29,269.20 and 7,830.80

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Solution

The fourth proportional to 19,516.40, 29,269.20 and 7,830.80 is: 11,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,516.40 : 29,269.20 = 7,830.80 : x
  2. Step 2: Convert to fraction form
    19,516.40/29,269.20 = 7,830.80/x
  3. Step 3: Cross multiply
    19,516.40x = 29,269.20 × 7,830.80
  4. Step 4: Simplify right side
    19,516.40x = 229,201,251.36
  5. Step 5: Solve for x
    x = 229,201,251.36/19,516.40
  6. Step 6: Final answer
    x = 11,744.03

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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.