Home / 19,386.78-26,758.08-12,311.88

Finding the Fourth Proportional to 19,386.78, 26,758.08 and 12,311.88

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Solution

The fourth proportional to 19,386.78, 26,758.08 and 12,311.88 is: 16,993.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.78 : 26,758.08 = 12,311.88 : x
  2. Step 2: Convert to fraction form
    19,386.78/26,758.08 = 12,311.88/x
  3. Step 3: Cross multiply
    19,386.78x = 26,758.08 × 12,311.88
  4. Step 4: Simplify right side
    19,386.78x = 329,442,269.99
  5. Step 5: Solve for x
    x = 329,442,269.99/19,386.78
  6. Step 6: Final answer
    x = 16,993.14

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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.