Home / 19,855.90-27,399.08-11,897.92

Finding the Fourth Proportional to 19,855.90, 27,399.08 and 11,897.92

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Solution

The fourth proportional to 19,855.90, 27,399.08 and 11,897.92 is: 16,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.90 : 27,399.08 = 11,897.92 : x
  2. Step 2: Convert to fraction form
    19,855.90/27,399.08 = 11,897.92/x
  3. Step 3: Cross multiply
    19,855.90x = 27,399.08 × 11,897.92
  4. Step 4: Simplify right side
    19,855.90x = 325,992,061.91
  5. Step 5: Solve for x
    x = 325,992,061.91/19,855.90
  6. Step 6: Final answer
    x = 16,417.89

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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.