Home / 19,663.03-27,139.88-12,115.83

Finding the Fourth Proportional to 19,663.03, 27,139.88 and 12,115.83

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Solution

The fourth proportional to 19,663.03, 27,139.88 and 12,115.83 is: 16,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.03 : 27,139.88 = 12,115.83 : x
  2. Step 2: Convert to fraction form
    19,663.03/27,139.88 = 12,115.83/x
  3. Step 3: Cross multiply
    19,663.03x = 27,139.88 × 12,115.83
  4. Step 4: Simplify right side
    19,663.03x = 328,822,172.30
  5. Step 5: Solve for x
    x = 328,822,172.30/19,663.03
  6. Step 6: Final answer
    x = 16,722.86

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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.