Home / 19,809.30-27,336.80-10,856.81

Finding the Fourth Proportional to 19,809.30, 27,336.80 and 10,856.81

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Solution

The fourth proportional to 19,809.30, 27,336.80 and 10,856.81 is: 14,982.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.30 : 27,336.80 = 10,856.81 : x
  2. Step 2: Convert to fraction form
    19,809.30/27,336.80 = 10,856.81/x
  3. Step 3: Cross multiply
    19,809.30x = 27,336.80 × 10,856.81
  4. Step 4: Simplify right side
    19,809.30x = 296,790,252.64
  5. Step 5: Solve for x
    x = 296,790,252.64/19,809.30
  6. Step 6: Final answer
    x = 14,982.37

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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.