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Finding the Fourth Proportional to 13,684.74, 18,884.91 and 7,397.11

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Solution

The fourth proportional to 13,684.74, 18,884.91 and 7,397.11 is: 10,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.74 : 18,884.91 = 7,397.11 : x
  2. Step 2: Convert to fraction form
    13,684.74/18,884.91 = 7,397.11/x
  3. Step 3: Cross multiply
    13,684.74x = 18,884.91 × 7,397.11
  4. Step 4: Simplify right side
    13,684.74x = 139,693,756.61
  5. Step 5: Solve for x
    x = 139,693,756.61/13,684.74
  6. Step 6: Final answer
    x = 10,207.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.