Home / 19,809.52-27,336.40-10,857.12

Finding the Fourth Proportional to 19,809.52, 27,336.40 and 10,857.12

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Solution

The fourth proportional to 19,809.52, 27,336.40 and 10,857.12 is: 14,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.52 : 27,336.40 = 10,857.12 : x
  2. Step 2: Convert to fraction form
    19,809.52/27,336.40 = 10,857.12/x
  3. Step 3: Cross multiply
    19,809.52x = 27,336.40 × 10,857.12
  4. Step 4: Simplify right side
    19,809.52x = 296,794,575.17
  5. Step 5: Solve for x
    x = 296,794,575.17/19,809.52
  6. Step 6: Final answer
    x = 14,982.42

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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.