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Finding the Fourth Proportional to 17,700.71, 26,555.61 and 5,220.23

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Solution

The fourth proportional to 17,700.71, 26,555.61 and 5,220.23 is: 7,831.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,700.71 : 26,555.61 = 5,220.23 : x
  2. Step 2: Convert to fraction form
    17,700.71/26,555.61 = 5,220.23/x
  3. Step 3: Cross multiply
    17,700.71x = 26,555.61 × 5,220.23
  4. Step 4: Simplify right side
    17,700.71x = 138,626,259.21
  5. Step 5: Solve for x
    x = 138,626,259.21/17,700.71
  6. Step 6: Final answer
    x = 7,831.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.