Home / 20,063.77-27,678.81-12,992.47

Finding the Fourth Proportional to 20,063.77, 27,678.81 and 12,992.47

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Solution

The fourth proportional to 20,063.77, 27,678.81 and 12,992.47 is: 17,923.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.77 : 27,678.81 = 12,992.47 : x
  2. Step 2: Convert to fraction form
    20,063.77/27,678.81 = 12,992.47/x
  3. Step 3: Cross multiply
    20,063.77x = 27,678.81 × 12,992.47
  4. Step 4: Simplify right side
    20,063.77x = 359,616,088.09
  5. Step 5: Solve for x
    x = 359,616,088.09/20,063.77
  6. Step 6: Final answer
    x = 17,923.66

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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.