Home / 20,003.70-27,603.23-12,820.93

Finding the Fourth Proportional to 20,003.70, 27,603.23 and 12,820.93

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Solution

The fourth proportional to 20,003.70, 27,603.23 and 12,820.93 is: 17,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.70 : 27,603.23 = 12,820.93 : x
  2. Step 2: Convert to fraction form
    20,003.70/27,603.23 = 12,820.93/x
  3. Step 3: Cross multiply
    20,003.70x = 27,603.23 × 12,820.93
  4. Step 4: Simplify right side
    20,003.70x = 353,899,079.60
  5. Step 5: Solve for x
    x = 353,899,079.60/20,003.70
  6. Step 6: Final answer
    x = 17,691.69

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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.