Home / 20,725,999.90-31,088,999.85-18,542,499.10

Finding the Fourth Proportional to 20,725,999.90, 31,088,999.85 and 18,542,499.10

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Solution

The fourth proportional to 20,725,999.90, 31,088,999.85 and 18,542,499.10 is: 27,813,748.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725,999.90 : 31,088,999.85 = 18,542,499.10 : x
  2. Step 2: Convert to fraction form
    20,725,999.90/31,088,999.85 = 18,542,499.10/x
  3. Step 3: Cross multiply
    20,725,999.90x = 31,088,999.85 × 18,542,499.10
  4. Step 4: Simplify right side
    20,725,999.90x = 576,467,751,738,525.25
  5. Step 5: Solve for x
    x = 576,467,751,738,525.25/20,725,999.90
  6. Step 6: Final answer
    x = 27,813,748.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.