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Finding the Fourth Proportional to 13,394.71, 18,484.36 and 7,426.36

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Solution

The fourth proportional to 13,394.71, 18,484.36 and 7,426.36 is: 10,248.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.71 : 18,484.36 = 7,426.36 : x
  2. Step 2: Convert to fraction form
    13,394.71/18,484.36 = 7,426.36/x
  3. Step 3: Cross multiply
    13,394.71x = 18,484.36 × 7,426.36
  4. Step 4: Simplify right side
    13,394.71x = 137,271,511.73
  5. Step 5: Solve for x
    x = 137,271,511.73/13,394.71
  6. Step 6: Final answer
    x = 10,248.19

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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.