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Finding the Fourth Proportional to 18,490.71, 27,735.80 and 17,308.70

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Solution

The fourth proportional to 18,490.71, 27,735.80 and 17,308.70 is: 25,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.71 : 27,735.80 = 17,308.70 : x
  2. Step 2: Convert to fraction form
    18,490.71/27,735.80 = 17,308.70/x
  3. Step 3: Cross multiply
    18,490.71x = 27,735.80 × 17,308.70
  4. Step 4: Simplify right side
    18,490.71x = 480,070,641.46
  5. Step 5: Solve for x
    x = 480,070,641.46/18,490.71
  6. Step 6: Final answer
    x = 25,962.80

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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.