Home / 19,813.82-27,343.10-10,861.36

Finding the Fourth Proportional to 19,813.82, 27,343.10 and 10,861.36

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Solution

The fourth proportional to 19,813.82, 27,343.10 and 10,861.36 is: 14,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.82 : 27,343.10 = 10,861.36 : x
  2. Step 2: Convert to fraction form
    19,813.82/27,343.10 = 10,861.36/x
  3. Step 3: Cross multiply
    19,813.82x = 27,343.10 × 10,861.36
  4. Step 4: Simplify right side
    19,813.82x = 296,983,211.41
  5. Step 5: Solve for x
    x = 296,983,211.41/19,813.82
  6. Step 6: Final answer
    x = 14,988.69

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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.