Home / 20,111.56-27,749.45-12,152.30

Finding the Fourth Proportional to 20,111.56, 27,749.45 and 12,152.30

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Solution

The fourth proportional to 20,111.56, 27,749.45 and 12,152.30 is: 16,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.56 : 27,749.45 = 12,152.30 : x
  2. Step 2: Convert to fraction form
    20,111.56/27,749.45 = 12,152.30/x
  3. Step 3: Cross multiply
    20,111.56x = 27,749.45 × 12,152.30
  4. Step 4: Simplify right side
    20,111.56x = 337,219,532.87
  5. Step 5: Solve for x
    x = 337,219,532.87/20,111.56
  6. Step 6: Final answer
    x = 16,767.45

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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.