Home / 20,965,714.60-31,433,980.56-9,287,743.20

Finding the Fourth Proportional to 20,965,714.60, 31,433,980.56 and 9,287,743.20

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Solution

The fourth proportional to 20,965,714.60, 31,433,980.56 and 9,287,743.20 is: 13,925,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965,714.60 : 31,433,980.56 = 9,287,743.20 : x
  2. Step 2: Convert to fraction form
    20,965,714.60/31,433,980.56 = 9,287,743.20/x
  3. Step 3: Cross multiply
    20,965,714.60x = 31,433,980.56 × 9,287,743.20
  4. Step 4: Simplify right side
    20,965,714.60x = 291,950,739,195,072.12
  5. Step 5: Solve for x
    x = 291,950,739,195,072.12/20,965,714.60
  6. Step 6: Final answer
    x = 13,925,150.88

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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.