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Finding the Fourth Proportional to 19,555.30, 29,335.65 and 7,072.30

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Solution

The fourth proportional to 19,555.30, 29,335.65 and 7,072.30 is: 10,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,555.30 : 29,335.65 = 7,072.30 : x
  2. Step 2: Convert to fraction form
    19,555.30/29,335.65 = 7,072.30/x
  3. Step 3: Cross multiply
    19,555.30x = 29,335.65 × 7,072.30
  4. Step 4: Simplify right side
    19,555.30x = 207,470,517.50
  5. Step 5: Solve for x
    x = 207,470,517.50/19,555.30
  6. Step 6: Final answer
    x = 10,609.43

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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.