Home / 13,394.34-18,487.83-8,355.57

Finding the Fourth Proportional to 13,394.34, 18,487.83 and 8,355.57

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Solution

The fourth proportional to 13,394.34, 18,487.83 and 8,355.57 is: 11,532.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.34 : 18,487.83 = 8,355.57 : x
  2. Step 2: Convert to fraction form
    13,394.34/18,487.83 = 8,355.57/x
  3. Step 3: Cross multiply
    13,394.34x = 18,487.83 × 8,355.57
  4. Step 4: Simplify right side
    13,394.34x = 154,476,357.71
  5. Step 5: Solve for x
    x = 154,476,357.71/13,394.34
  6. Step 6: Final answer
    x = 11,532.96

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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.