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Finding the Fourth Proportional to 18,842.40, 26,006.40 and 13,175.64

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Solution

The fourth proportional to 18,842.40, 26,006.40 and 13,175.64 is: 18,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.40 : 26,006.40 = 13,175.64 : x
  2. Step 2: Convert to fraction form
    18,842.40/26,006.40 = 13,175.64/x
  3. Step 3: Cross multiply
    18,842.40x = 26,006.40 × 13,175.64
  4. Step 4: Simplify right side
    18,842.40x = 342,650,964.10
  5. Step 5: Solve for x
    x = 342,650,964.10/18,842.40
  6. Step 6: Final answer
    x = 18,185.10

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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.