Home / 13,318.14-18,385.69-8,283.98

Finding the Fourth Proportional to 13,318.14, 18,385.69 and 8,283.98

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Solution

The fourth proportional to 13,318.14, 18,385.69 and 8,283.98 is: 11,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.14 : 18,385.69 = 8,283.98 : x
  2. Step 2: Convert to fraction form
    13,318.14/18,385.69 = 8,283.98/x
  3. Step 3: Cross multiply
    13,318.14x = 18,385.69 × 8,283.98
  4. Step 4: Simplify right side
    13,318.14x = 152,306,644.55
  5. Step 5: Solve for x
    x = 152,306,644.55/13,318.14
  6. Step 6: Final answer
    x = 11,436.03

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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.