Home / 19,647.90-27,107.10-11,689.92

Finding the Fourth Proportional to 19,647.90, 27,107.10 and 11,689.92

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Solution

The fourth proportional to 19,647.90, 27,107.10 and 11,689.92 is: 16,127.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.90 : 27,107.10 = 11,689.92 : x
  2. Step 2: Convert to fraction form
    19,647.90/27,107.10 = 11,689.92/x
  3. Step 3: Cross multiply
    19,647.90x = 27,107.10 × 11,689.92
  4. Step 4: Simplify right side
    19,647.90x = 316,879,830.43
  5. Step 5: Solve for x
    x = 316,879,830.43/19,647.90
  6. Step 6: Final answer
    x = 16,127.92

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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.