Home / 20,685,771.80-31,028,657.70-18,453,719.60

Finding the Fourth Proportional to 20,685,771.80, 31,028,657.70 and 18,453,719.60

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Solution

The fourth proportional to 20,685,771.80, 31,028,657.70 and 18,453,719.60 is: 27,680,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685,771.80 : 31,028,657.70 = 18,453,719.60 : x
  2. Step 2: Convert to fraction form
    20,685,771.80/31,028,657.70 = 18,453,719.60/x
  3. Step 3: Cross multiply
    20,685,771.80x = 31,028,657.70 × 18,453,719.60
  4. Step 4: Simplify right side
    20,685,771.80x = 572,594,148,760,181
  5. Step 5: Solve for x
    x = 572,594,148,760,181/20,685,771.80
  6. Step 6: Final answer
    x = 27,680,579.40

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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.