Home / 20,055.77-27,675.91-10,979.39

Finding the Fourth Proportional to 20,055.77, 27,675.91 and 10,979.39

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Solution

The fourth proportional to 20,055.77, 27,675.91 and 10,979.39 is: 15,150.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.77 : 27,675.91 = 10,979.39 : x
  2. Step 2: Convert to fraction form
    20,055.77/27,675.91 = 10,979.39/x
  3. Step 3: Cross multiply
    20,055.77x = 27,675.91 × 10,979.39
  4. Step 4: Simplify right side
    20,055.77x = 303,864,665.23
  5. Step 5: Solve for x
    x = 303,864,665.23/20,055.77
  6. Step 6: Final answer
    x = 15,150.98

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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.