Home / 19,901.39-27,458.47-12,344.09

Finding the Fourth Proportional to 19,901.39, 27,458.47 and 12,344.09

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Solution

The fourth proportional to 19,901.39, 27,458.47 and 12,344.09 is: 17,031.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.39 : 27,458.47 = 12,344.09 : x
  2. Step 2: Convert to fraction form
    19,901.39/27,458.47 = 12,344.09/x
  3. Step 3: Cross multiply
    19,901.39x = 27,458.47 × 12,344.09
  4. Step 4: Simplify right side
    19,901.39x = 338,949,824.94
  5. Step 5: Solve for x
    x = 338,949,824.94/19,901.39
  6. Step 6: Final answer
    x = 17,031.46

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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.