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Finding the Fourth Proportional to 17,775.71, 26,664.72 and 5,125.80

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Solution

The fourth proportional to 17,775.71, 26,664.72 and 5,125.80 is: 7,689.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,775.71 : 26,664.72 = 5,125.80 : x
  2. Step 2: Convert to fraction form
    17,775.71/26,664.72 = 5,125.80/x
  3. Step 3: Cross multiply
    17,775.71x = 26,664.72 × 5,125.80
  4. Step 4: Simplify right side
    17,775.71x = 136,678,021.78
  5. Step 5: Solve for x
    x = 136,678,021.78/17,775.71
  6. Step 6: Final answer
    x = 7,689.03

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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.