Home / 20,063.65-27,678.64-12,992.35

Finding the Fourth Proportional to 20,063.65, 27,678.64 and 12,992.35

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Solution

The fourth proportional to 20,063.65, 27,678.64 and 12,992.35 is: 17,923.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.65 : 27,678.64 = 12,992.35 : x
  2. Step 2: Convert to fraction form
    20,063.65/27,678.64 = 12,992.35/x
  3. Step 3: Cross multiply
    20,063.65x = 27,678.64 × 12,992.35
  4. Step 4: Simplify right side
    20,063.65x = 359,610,440.01
  5. Step 5: Solve for x
    x = 359,610,440.01/20,063.65
  6. Step 6: Final answer
    x = 17,923.48

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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.