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Finding the Fourth Proportional to 19,108.40, 28,662.60 and 17,140.10

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Solution

The fourth proportional to 19,108.40, 28,662.60 and 17,140.10 is: 25,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.40 : 28,662.60 = 17,140.10 : x
  2. Step 2: Convert to fraction form
    19,108.40/28,662.60 = 17,140.10/x
  3. Step 3: Cross multiply
    19,108.40x = 28,662.60 × 17,140.10
  4. Step 4: Simplify right side
    19,108.40x = 491,279,830.26
  5. Step 5: Solve for x
    x = 491,279,830.26/19,108.40
  6. Step 6: Final answer
    x = 25,710.15

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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.