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Finding the Fourth Proportional to 17,871.71, 26,798.90 and 5,389.43

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Solution

The fourth proportional to 17,871.71, 26,798.90 and 5,389.43 is: 8,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,871.71 : 26,798.90 = 5,389.43 : x
  2. Step 2: Convert to fraction form
    17,871.71/26,798.90 = 5,389.43/x
  3. Step 3: Cross multiply
    17,871.71x = 26,798.90 × 5,389.43
  4. Step 4: Simplify right side
    17,871.71x = 144,430,634.69
  5. Step 5: Solve for x
    x = 144,430,634.69/17,871.71
  6. Step 6: Final answer
    x = 8,081.53

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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.