Home / 19,609.71-29,405.33-7,120.90

Finding the Fourth Proportional to 19,609.71, 29,405.33 and 7,120.90

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Solution

The fourth proportional to 19,609.71, 29,405.33 and 7,120.90 is: 10,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,609.71 : 29,405.33 = 7,120.90 : x
  2. Step 2: Convert to fraction form
    19,609.71/29,405.33 = 7,120.90/x
  3. Step 3: Cross multiply
    19,609.71x = 29,405.33 × 7,120.90
  4. Step 4: Simplify right side
    19,609.71x = 209,392,414.40
  5. Step 5: Solve for x
    x = 209,392,414.40/19,609.71
  6. Step 6: Final answer
    x = 10,678.00

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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.