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Finding the Fourth Proportional to 18,762.66, 28,284.56 and 17,494.26

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Solution

The fourth proportional to 18,762.66, 28,284.56 and 17,494.26 is: 26,372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.66 : 28,284.56 = 17,494.26 : x
  2. Step 2: Convert to fraction form
    18,762.66/28,284.56 = 17,494.26/x
  3. Step 3: Cross multiply
    18,762.66x = 28,284.56 × 17,494.26
  4. Step 4: Simplify right side
    18,762.66x = 494,817,359.15
  5. Step 5: Solve for x
    x = 494,817,359.15/18,762.66
  6. Step 6: Final answer
    x = 26,372.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.