Home / 20,261,157.76-30,403,840.78-18,612,746.60

Finding the Fourth Proportional to 20,261,157.76, 30,403,840.78 and 18,612,746.60

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Solution

The fourth proportional to 20,261,157.76, 30,403,840.78 and 18,612,746.60 is: 27,930,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261,157.76 : 30,403,840.78 = 18,612,746.60 : x
  2. Step 2: Convert to fraction form
    20,261,157.76/30,403,840.78 = 18,612,746.60/x
  3. Step 3: Cross multiply
    20,261,157.76x = 30,403,840.78 × 18,612,746.60
  4. Step 4: Simplify right side
    20,261,157.76x = 565,898,984,104,886.38
  5. Step 5: Solve for x
    x = 565,898,984,104,886.38/20,261,157.76
  6. Step 6: Final answer
    x = 27,930,239.27

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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.