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Finding the Fourth Proportional to 18,740.71, 28,097.16 and 11,343.41

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Solution

The fourth proportional to 18,740.71, 28,097.16 and 11,343.41 is: 17,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.71 : 28,097.16 = 11,343.41 : x
  2. Step 2: Convert to fraction form
    18,740.71/28,097.16 = 11,343.41/x
  3. Step 3: Cross multiply
    18,740.71x = 28,097.16 × 11,343.41
  4. Step 4: Simplify right side
    18,740.71x = 318,717,605.72
  5. Step 5: Solve for x
    x = 318,717,605.72/18,740.71
  6. Step 6: Final answer
    x = 17,006.70

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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.