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Finding the Fourth Proportional to 13,366, 18,444.36 and 7,397.38

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Solution

The fourth proportional to 13,366, 18,444.36 and 7,397.38 is: 10,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366 : 18,444.36 = 7,397.38 : x
  2. Step 2: Convert to fraction form
    13,366/18,444.36 = 7,397.38/x
  3. Step 3: Cross multiply
    13,366x = 18,444.36 × 7,397.38
  4. Step 4: Simplify right side
    13,366x = 136,439,939.78
  5. Step 5: Solve for x
    x = 136,439,939.78/13,366
  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.