Home / 20,111.70-27,749.94-12,152.40

Finding the Fourth Proportional to 20,111.70, 27,749.94 and 12,152.40

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Solution

The fourth proportional to 20,111.70, 27,749.94 and 12,152.40 is: 16,767.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.70 : 27,749.94 = 12,152.40 : x
  2. Step 2: Convert to fraction form
    20,111.70/27,749.94 = 12,152.40/x
  3. Step 3: Cross multiply
    20,111.70x = 27,749.94 × 12,152.40
  4. Step 4: Simplify right side
    20,111.70x = 337,228,370.86
  5. Step 5: Solve for x
    x = 337,228,370.86/20,111.70
  6. Step 6: Final answer
    x = 16,767.77

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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.