Home / 15,369.45-21,202.18-9,390.70

Finding the Fourth Proportional to 15,369.45, 21,202.18 and 9,390.70

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Solution

The fourth proportional to 15,369.45, 21,202.18 and 9,390.70 is: 12,954.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.45 : 21,202.18 = 9,390.70 : x
  2. Step 2: Convert to fraction form
    15,369.45/21,202.18 = 9,390.70/x
  3. Step 3: Cross multiply
    15,369.45x = 21,202.18 × 9,390.70
  4. Step 4: Simplify right side
    15,369.45x = 199,103,311.73
  5. Step 5: Solve for x
    x = 199,103,311.73/15,369.45
  6. Step 6: Final answer
    x = 12,954.49

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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.