Home / 20,731,983.60-31,097,975.40-9,947,449.20

Finding the Fourth Proportional to 20,731,983.60, 31,097,975.40 and 9,947,449.20

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Solution

The fourth proportional to 20,731,983.60, 31,097,975.40 and 9,947,449.20 is: 14,921,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731,983.60 : 31,097,975.40 = 9,947,449.20 : x
  2. Step 2: Convert to fraction form
    20,731,983.60/31,097,975.40 = 9,947,449.20/x
  3. Step 3: Cross multiply
    20,731,983.60x = 31,097,975.40 × 9,947,449.20
  4. Step 4: Simplify right side
    20,731,983.60x = 309,345,530,514,349.62
  5. Step 5: Solve for x
    x = 309,345,530,514,349.62/20,731,983.60
  6. Step 6: Final answer
    x = 14,921,173.80

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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.