Home / 12,209.35-18,350.48-10,605.55

Finding the Fourth Proportional to 12,209.35, 18,350.48 and 10,605.55

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Solution

The fourth proportional to 12,209.35, 18,350.48 and 10,605.55 is: 15,939.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.35 : 18,350.48 = 10,605.55 : x
  2. Step 2: Convert to fraction form
    12,209.35/18,350.48 = 10,605.55/x
  3. Step 3: Cross multiply
    12,209.35x = 18,350.48 × 10,605.55
  4. Step 4: Simplify right side
    12,209.35x = 194,616,880.14
  5. Step 5: Solve for x
    x = 194,616,880.14/12,209.35
  6. Step 6: Final answer
    x = 15,939.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.