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Finding the Fourth Proportional to 18,799.40, 28,199.10 and 17,071.40

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Solution

The fourth proportional to 18,799.40, 28,199.10 and 17,071.40 is: 25,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,799.40 : 28,199.10 = 17,071.40 : x
  2. Step 2: Convert to fraction form
    18,799.40/28,199.10 = 17,071.40/x
  3. Step 3: Cross multiply
    18,799.40x = 28,199.10 × 17,071.40
  4. Step 4: Simplify right side
    18,799.40x = 481,398,115.74
  5. Step 5: Solve for x
    x = 481,398,115.74/18,799.40
  6. Step 6: Final answer
    x = 25,607.10

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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.