Home / 20,126.14-27,768.39-12,580.12

Finding the Fourth Proportional to 20,126.14, 27,768.39 and 12,580.12

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Solution

The fourth proportional to 20,126.14, 27,768.39 and 12,580.12 is: 17,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.14 : 27,768.39 = 12,580.12 : x
  2. Step 2: Convert to fraction form
    20,126.14/27,768.39 = 12,580.12/x
  3. Step 3: Cross multiply
    20,126.14x = 27,768.39 × 12,580.12
  4. Step 4: Simplify right side
    20,126.14x = 349,329,678.41
  5. Step 5: Solve for x
    x = 349,329,678.41/20,126.14
  6. Step 6: Final answer
    x = 17,357.01

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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.