Home / 19,880.34-27,423.44-12,415.38

Finding the Fourth Proportional to 19,880.34, 27,423.44 and 12,415.38

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Solution

The fourth proportional to 19,880.34, 27,423.44 and 12,415.38 is: 17,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.34 : 27,423.44 = 12,415.38 : x
  2. Step 2: Convert to fraction form
    19,880.34/27,423.44 = 12,415.38/x
  3. Step 3: Cross multiply
    19,880.34x = 27,423.44 × 12,415.38
  4. Step 4: Simplify right side
    19,880.34x = 340,472,379.99
  5. Step 5: Solve for x
    x = 340,472,379.99/19,880.34
  6. Step 6: Final answer
    x = 17,126.09

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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.